Eicosapentaenoic acid-producing microorganisms, fatty acid compositions, and methods of making and uses thereof

ABSTRACT

The invention is directed to microbial oils containing omega-3 polyunsaturated fatty acids comprising docosahexaenoic acid, eicosapentaenoic acid, and optionally docosapentaenoic acid and dosage forms containing such oils.

The content of the electronically submitted sequence listing (“sequencelisting.txt”, 5,136 bytes, created on Jul. 20, 2011) filed with theapplication is incorporated herein by reference in its entirety.

The present invention is directed to isolated microorganisms as well asstrains and mutants thereof, biomasses, microbial oils, compositions,and cultures; methods of producing the microbial oils, biomasses, andmutants; and methods of using the isolated microorganisms, biomasses,and microbial oils.

Fatty acids are classified based on the length and saturationcharacteristics of the carbon chain. Fatty acids are termed short chain,medium chain, or long chain fatty acids based on the number of carbonspresent in the chain, are termed saturated fatty acids when no doublebonds are present between the carbon atoms, and are termed unsaturatedfatty acids when double bonds are present. Unsaturated long chain fattyacids are monounsaturated when only one double bond is present and arepolyunsaturated when more than one double bond is present.

Polyunsaturated fatty acids (PUFAs) are classified based on the positionof the first double bond from the methyl end of the fatty acid: omega-3(n-3) fatty acids contain a first double bond at the third carbon, whileomega-6 (n-6) fatty acids contain a first double bond at the sixthcarbon. For example, docosahexaenoic acid (“DHA”) is an omega-3 longchain polyunsaturated fatty acid (LC-PUFA) with a chain length of 22carbons and 6 double bonds, often designated as “22:6 n-3.” Otheromega-3 LC-PUFAs include eicosapentaenoic acid (“EPA”), designated as“20:5 n-3,” and omega-3 docosapentaenoic acid (“DPA n-3”), designated as“22:5 n-3.” DHA and EPA have been termed “essential” fatty acids.Omega-6 LC-PUFAs include arachidonic acid (“ARA”), designated as “20:4n-6,” and omega-6 docosapentaenoic acid (“DPA n-6”), designated as “22:5n-6.”

Omega-3 fatty acids are biologically important molecules that affectcellular physiology due to their presence in cell membranes, regulateproduction and gene expression of biologically active compounds, andserve as biosynthetic substrates. Roche, H. M., Proc. Nutr. Soc. 58:397-401 (1999). DHA, for example, accounts for approximately 15%-20% oflipids in the human cerebral cortex, 30%-60% of lipids in the retina, isconcentrated in the testes and sperm, and is an important component ofbreast milk. Berge, J. P., and Barnathan, G. Adv. Biochem. Eng.Biotechnol. 96:49-125 (2005). DHA accounts for up to 97% of the omega-3fatty acids in the brain and up to 93% of the omega-3 fatty acids in theretina. Moreover, DHA is essential for both fetal and infant developmentas well as maintenance of cognitive functions in adults. Id. Becauseomega-3 fatty acids are not synthesized de novo in the human body, thesefatty acids must be derived from nutritional sources.

Flaxseed oil and fish oils are considered good dietary sources ofomega-3 fatty acids. Flaxseed oil contains no EPA, DHA, DPA, or ARA butrather contains linolenic acid (C18:3 n-3), a building block enablingthe body to manufacture EPA. There is evidence, however, that the rateof metabolic conversion can be slow and variable, particularly amongthose with impaired health. Fish oils vary considerably in the type andlevel of fatty acid composition depending on the particular species andtheir diets. For example, fish raised by aquaculture tend to have alower level of omega-3 fatty acids than those in the wild. Furthermore,fish oils carry the risk of containing environmental contaminants andcan be associated with stability problems and a fishy odor or taste.

Thraustochytrids are microorganisms of the order Thraustochytriales.Thraustochytrids include members of the genus Schizochytrium andThraustochytrium and have been recognized as an alternative source ofomega-3 fatty acids, including DHA and EPA. See U.S. Pat. No. 5,130,242.Oils produced from these marine heterotrophic microorganisms often havesimpler polyunsaturated fatty acid profiles than corresponding fish ormicroalgal oils. Lewis, T. E., Mar. Biotechnol. 1: 580-587 (1999).Strains of thraustochytrid species have been reported to produce omega-3fatty acids as a high percentage of the total fatty acids produced bythe organisms. U.S. Pat. No. 5,130,242; Huang, J. et al., J. Am. Oil.Chem. Soc. 78: 605-610 (2001); Huang, J. et al., Mar. Biotechnol. 5:450-457 (2003). However, isolated thraustochytrids vary in the identityand amounts of LC-PUFAs produced, such that some previously describedstrains can have undesirable levels of omega-6 fatty acids and/or candemonstrate low productivity in culture. As such, a continuing needexists for the isolation of microorganisms demonstrating highproductivity and desirable LC-PUFA profiles.

The present invention is directed to an isolated microorganism of thespecies deposited under ATCC Accession No. PTA-10212.

The present invention is directed to an isolated microorganism havingthe characteristics of the species deposited under ATCC Accession No.PTA-10212.

The present invention is directed to an isolated microorganismcomprising an 18s rRNA comprising a polynucleotide sequence of SEQ IDNO:1 or a polynucleotide sequence having at least 94% identity to SEQ IDNO:1.

The present invention is directed to an isolated microorganismcomprising an 18s rRNA polynucleotide sequence that has at least 94%identity to an 18s rRNA polynucleotide sequence of the microorganismdeposited under ATCC Accession No. PTA-10212.

The present invention is directed to an isolated microorganism of thespecies deposited under ATCC Accession No. PTA-10208, wherein the totalfatty acids produced by the microorganism comprises more than about 10%by weight eicosapentaenoic acid.

The present invention is directed to an isolated microorganism havingthe characteristics of the species deposited under ATCC Accession No.PTA-10208, wherein the total fatty acids produced by the microorganismcomprises more than about 10% by weight eicosapentaenoic acid.

The present invention is directed to an isolated microorganism thatproduces a triacylglycerol fraction, wherein eicosapentaenoic acidcontent of the triacylglycerol fraction is at least about 12% by weight.

In some embodiments, the isolated microorganism of the invention is amutant strain.

The present invention is directed to an isolated microorganism depositedunder ATCC Accession No. PTA-10212, PTA-10213, PTA-10214, PTA-10215,PTA-10208, PTA-10209, PTA-10210, or PTA-10211.

The present invention is directed to a biomass comprising any of themicroorganisms of the invention or mixtures thereof.

The present invention is directed to an isolated biomass, wherein atleast about 20% by weight of a dry cell weight of the biomass are fattyacids, wherein more than about 10% by weight of fatty acids iseicosapentaenoic acid, and wherein the fatty acids comprise less thanabout 5% by weight each of arachidonic acid and docosapentaenoic acidn-6. In some embodiments, at least about 25% by weight of the fattyacids is docosahexaenoic acid.

In some embodiments, the present invention is directed to an isolatedbiomass comprising triacylglycerol, wherein at least about 12% by weightof triacylglycerol is eicosapentaenoic acid.

In some embodiments, the present invention is directed to any of theisolated biomasses of the invention wherein the fatty acids furthercomprise less than about 5% by weight each of oleic acid, linoleic acid,linolenic acid, eicosenoic acid, and erucic acid.

The present invention is directed to an isolated culture comprising anyof the microorganisms of the invention or mixtures thereof.

The present invention is directed to a food product, cosmetic, orpharmaceutical composition for a non-human animal or human, comprisingany of the microorganisms or biomasses of the invention or mixturesthereof.

The present invention is directed to a microbial oil comprising at leastabout 20% by weight eicosapentaenoic acid and less than about 5% byweight each of arachidonic acid, docosapentaenoic acid n-6, oleic acid,linoleic acid, linolenic acid, eicosenoic acid, erucic acid, andstearidonic acid. In some embodiments, the microbial oil furthercomprises at least about 25% by weight docosahexaenoic acid.

The present invention is directed to a microbial oil comprising atriacylglycerol fraction of at least about 10% by weight, wherein atleast about 12% by weight of the fatty acids in the triacylglycerolfraction is eicosapentaenoic acid, wherein at least about 25% by weightof the fatty acids in the triacylglycerol fraction is docosahexaenoicacid, and wherein less than about 5% by weight of the fatty acids in thetriacylglycerol fraction is arachidonic acid.

The present invention is directed to a food product, cosmetic, orpharmaceutical composition for a non-human animal or human, comprisingany of the microbial oils of the invention. In some embodiments, thefood product is an infant formula. In some embodiments, the infantformula is suitable for premature infants. In some embodiments, the foodproduct is a milk, a beverage, a therapeutic drink, a nutritional drink,or a combination thereof. In some embodiments, the food product is anadditive for the non-human animal or human food. In some embodiments,the food product is a nutritional supplement. In some embodiments, thefood product is an animal feed. In some embodiments, the animal feed isan aquaculture feed. In some embodiments, the animal feed is a domesticanimal feed, a zoological animal feed, a work animal feed, a livestockfeed, or a combination thereof.

The present invention is directed to a method for producing a microbialoil comprising omega-3 fatty acids, the method comprising: growing anyof the isolated microorganisms of the invention or mixtures thereof in aculture to produce an oil comprising omega-3 fatty acids. In someembodiments, the method further comprises extracting the oil.

The present invention is directed to a method for producing a microbialoil comprising omega-3 fatty acids, the method comprising extracting anoil comprising omega-3 fatty acids from any of the biomasses of theinvention. In some embodiments, the microbial oil is extracted using anorganic solvent extraction process, for example hexane extraction. Insome embodiments, the microbial oil is extracted using a solventlessextraction process.

The present invention is directed to a microbial oil produced by amethod of the invention.

The present invention is directed to a method for producing a biomass ofthe invention, comprising: growing any of the isolated microorganisms ofthe invention or mixtures thereof in a culture to produce a biomass.

The present invention is directed to a biomass produced by a method ofthe invention.

The present invention is directed to a method for producing a mutantstrain of the invention, comprising: mutagenizing any of themicroorganisms of the invention, and isolating the mutant strain.

The present invention is directed to use of any of the isolatedmicroorganisms, biomasses, or microbial oils of the invention, ormixtures thereof, for the manufacture of a medicament for treatment ofinflammation or a condition related thereto.

The present invention is directed to use of any of the isolatedmicroorganisms, biomasses, or microbial oils of the invention, ormixtures thereof, for treatment of inflammation or a condition relatedthereto.

The present invention is directed to any of the isolated microorganisms,biomasses, or microbial oils of the invention, or mixtures thereof, foruse in treatment of inflammation or a condition related thereto.

The present invention is directed to a method for treating inflammationor a condition related thereto in a subject in need thereof, comprisingadministering to the subject any of the isolated microorganisms,biomasses, or microbial oils of the invention, or mixtures thereof, anda pharmaceutically acceptable carrier.

The present invention is directed to isolated microorganisms, as well asstrains and mutants thereof, as well as biomasses, microbial oils,compositions, and cultures thereof. The present invention is directed tomethods of producing microbial oils, biomasses, and mutants from themicroorganisms of the invention, and methods of using themicroorganisms, biomasses, and microbial oils. The microorganismsdescribed herein are highly productive and produce unique fatty acidprofiles, characterized in part by high levels of omega-3 fatty acids,in particular high levels of EPA.

The invention is directed to isolated microorganisms and strains derivedtherefrom. A strain that is “derived” from an isolated microorganism ofthe invention can be a natural or artificial derivative such as, forexample, a mutant, variant, or recombinant strain. The term “isolated”as used herein does not necessarily reflect the extent to which anisolate has been purified, but indicates isolation or separation from anative form or native environment. An isolate can include, but is notlimited to, an isolated microorganism, an isolated biomass, an isolatedculture, an isolated microbial oil, and an isolated sequence (such as anisolated polynucleotide sequence disclosed herein). The term“microorganism” as used herein includes, but is not limited to, theterms “microalgae,” “thraustochytrid,” and taxonomic classificationsassociated with any of the deposited microorganisms described herein.The terms “Thraustochytriales,” “thraustochytrid,” “Schizochytrium,” and“Thraustochytrium” as used in reference to any of the microorganisms ofthe invention, including the deposited microorganisms described herein,are based on present taxonomic classifications including availablephylogenetic information and are not intended to be limiting in theevent that the taxonomic classifications are revised after the filingdate of the present application.

In some embodiments, the invention is directed to an isolatedmicroorganism of the species deposited under ATCC Accession No.PTA-10212. The isolated microorganism associated with ATCC Accession No.PTA-10212 is also known herein as Thraustochytrium sp. ATCC PTA-10212.The isolated microorganism associated with ATCC Accession No. PTA-10212was deposited under the Budapest Treaty on Jul. 14, 2009 at the AmericanType Culture Collection, Patent Depository, 10801 University Boulevard,Manassas, Va. 20110-2209. In some embodiments, the invention is directedto an isolated strain deposited under ATCC Accession No. PTA-10212.

In some embodiments, the invention is directed to an isolatedmicroorganism having the characteristics of the species deposited underATCC Accession No. PTA-10212 or a strain derived therefrom. Thecharacteristics of the species deposited under ATCC Accession No.PTA-10212 can include its growth and phenotypic properties (examples ofphenotypic properties include morphological and reproductiveproperties), its physical and chemical properties (such as dry weightsand lipid profiles), its gene sequences, and combinations thereof, inwhich the characteristics distinguish the species over previouslyidentified species. In some embodiments, the invention is directed to anisolated microorganism having the characteristics of the speciesdeposited under ATCC Accession No. PTA-10212, wherein thecharacteristics include an 18s rRNA comprising the polynucleotidesequence of SEQ ID NO:1 or a polynucleotide sequence having at least94%, 95%, 96%, 97%, 98%, or 99% identity to SEQ ID NO:1, themorphological and reproductive properties of the species deposited underATCC Accession No. PTA-10212, and the fatty acid profiles of the speciesdeposited under ATCC Accession No. PTA-10212. In some embodiments,isolated microorganisms of the invention have phenotypic propertiessubstantially identical to those of the microorganism deposited underATCC Accession No. PTA-10212. In some embodiments, isolatedmicroorganisms of the invention have growth properties substantiallyidentical to those of the microorganism deposited under ATCC AccessionNo. PTA-10212. In some embodiments, the invention is directed to anisolated microorganism comprising an 18s rRNA comprising thepolynucleotide sequence of SEQ ID NO:1 or a polynucleotide sequencehaving at least 94%, 95%, 96%, 97%, 98%, or 99% identity to SEQ ID NO:1.In some embodiments, the invention is directed to an isolatedmicroorganism comprising an 18s rRNA polynucleotide sequence that has atleast 94% identity to the 18s rRNA polynucleotide sequence of themicroorganism deposited under ATCC Accession No. PTA-10212.

In some embodiments, the invention is directed to a mutant strain of themicroorganism deposited under ATCC Accession No. PTA-10212. In furtherembodiments, the mutant strain is a strain deposited under ATCCAccession No. PTA-10213, PTA-10214, or PTA-10215. The microorganismsassociated with ATCC Accession Nos. PTA-10213, PTA-10214, and PTA-10215were deposited under the Budapest Treaty on Jul. 14, 2009 at theAmerican Type Culture Collection, Patent Depository, 10801 UniversityBoulevard, Manassas, Va. 20110-2209.

In some embodiments, the invention is directed to an isolatedmicroorganism of the species deposited under ATCC Accession No.PTA-10208. The isolated microorganism associated with ATCC Accession No.PTA-10208 is also known herein as Schizochytrium sp. ATCC PTA-10208. Themicroorganism associated with ATCC Accession No. PTA-10208 was depositedunder the Budapest Treaty on Jul. 14, 2009 at the American Type CultureCollection, Patent Depository, 10801 University Boulevard, Manassas, Va.20110-2209. In some embodiments, the invention is directed to anisolated strain deposited under ATCC Accession No. PTA-10208.

In some embodiments, the invention is directed to an isolatedmicroorganism of the species deposited under ATCC Accession No.PTA-10208, wherein the total fatty acids produced by the microorganismcomprises more than about 10%, more than about 11%, more than about 12%,more than about 13%, more than about 14%, more than about 15%, more thanabout 16%, more than about 17%, more than about 18%, more than about19%, or more than about 20% by weight EPA. In some embodiments, theinvention is directed to an isolated microorganism of the speciesdeposited under ATCC Accession No. PTA-10208, wherein the total fattyacids produced by the microorganism comprises about 10% to about 55%,about 10% to about 50%, about 10% to about 45%, about 10% to about 40%,about 10% to about 35%, about 10% to about 30%, about 15% to about 55%,about 15% to about 50%, about 15% to about 45%, about 15% to about 40%,about 15% to about 35%, about 15% to about 30%, about 20% to about 55%,about 20% to about 50%, about 20% to about 45%, about 20% to about 40%,about 20% to about 35%, or about 20% to about 30% by weight EPA.

In some embodiments, the invention is directed to an isolatedmicroorganism having the characteristics of the species deposited underATCC Accession No. PTA-10208, wherein the total fatty acids produced bythe microorganism comprises more than about 10% by weighteicosapentaenoic acid. The characteristics of the microorganismdeposited under ATCC Accession No. PTA-10208 include its growth andphenotypic properties (examples of phenotypic properties includemorphological and reproductive properties), its physical and chemicalproperties (such as dry weights and lipid profiles), its gene sequences,and combinations thereof, in which the characteristics distinguish thespecies over previously identified species. In some embodiments, theinvention is directed to an isolated microorganism having thecharacteristics of the species deposited under ATCC Accession No.PTA-10212, wherein the characteristics include an 18s rRNA comprisingthe polynucleotide sequence of SEQ ID NO:2, the morphological andreproductive properties of the species deposited under ATCC AccessionNo. PTA-10208, and the fatty acid profiles of the species depositedunder ATCC Accession No. PTA-10208. In some embodiments, isolatedmicroorganisms of the invention have physical and chemical propertiessubstantially identical to those of the microorganism deposited underATCC Accession No. PTA-10208.

In some embodiments, the invention is directed to a mutant strain of themicroorganism deposited under ATCC Accession No. PTA-10208. In furtherembodiments, the mutant strain is a strain deposited under ATCCAccession No. PTA-10209, PTA-10210, or PTA-10211. The microorganismsassociated with ATCC Accession Nos. PTA-10209, PTA-10210, and PTA-10211were deposited under the Budapest Treaty on Sep. 25, 2009 at theAmerican Type Culture Collection, Patent Depository, 10801 UniversityBoulevard, Manassas, Va. 20110-2209.

In some embodiments, the invention is directed to an isolatedmicroorganism of the invention that produces a triacylglycerol fraction,wherein the EPA content of the triacylglycerol fraction is at leastabout 12%, at least about 13%, at least about 14%, at least about 15%,at least about 16%, at least about 17%, at least about 18%, at leastabout 19%, or at least about 20% by weight. In some embodiments, theinvention is directed to an isolated microorganism that produces atriacylglycerol fraction, wherein the EPA content of the triacylglycerolfraction is about 12% to about 55%, about 12% to about 50%, about 12% toabout 45%, about 12% to about 40%, about 12% to about 35%, about 12% toabout 30%, about 15% to about 45%, about 15% to about 40%, about 15% toabout 35%, about 15% to about 30%, or about 20% to about 30% by weight.

In some embodiments, the invention is directed to a mutant, variant, orrecombinant of an isolated microorganism of the invention that producesa triacylglycerol fraction, wherein the EPA content of thetriacylglycerol fraction is at least about 10%, at least about 11%, atleast about 12%, at least about 13%, at least about 14%, at least about15%, at least about 16%, at least about 17%, at least about 18%, atleast about 19%, or at least about 20% by weight. In some embodiments,the invention is directed to a mutant, variant, or recombinant of anisolated microorganism of the invention that produces a triacylglycerolfraction, wherein the EPA content of the triacylglycerol fraction isabout 12% to about 55%, about 12% to about 50%, about 12% to about 45%,about 12% to about 40%, about 12% to about 35%, about 12% to about 30%,about 15% to about 55%, about 15% to about 50%, about 15% to about 45%,about 15% to about 40%, about 15% to about 35%, about 15% to about 30%,about 20% to about 55%, about 20% to about 50%, about 20% to about 45%,about 20% to about 40%, about 20% to about 35%, or about 20% to about30% by weight. Mutant strains can be produced by well-known procedures.Common procedures include irradiation, treatment at high temperatures,and treatment with a mutagen. Variant strains can be other naturallyoccurring isolates and/or sub-isolates of the species described herein.Recombinant strains can be produced by any well-known methods inmolecular biology for the expression of exogenous genes or alteration ofendogenous gene function or expression. In some embodiments, the mutant,variant, or recombinant strain produces a higher amount of omega-3 fattyacids, particularly EPA, than the wild-type strain. In some embodiments,the mutant, variant, or recombinant strain produces a lower amount ofone or more fatty acids, such as lower amounts of DHA, ARA, DPA n-6, orcombinations thereof. In some embodiments, the mutant, variant, orrecombinant strain produces a larger dry cell weight per liter ofculture than the wild-type strain. Such mutant, variant, or recombinantstrains are examples of strains derived from an isolated microorganismof the invention.

In some embodiments, an isolated microorganism of the invention,including mutants, variants, and recombinants thereof, comprises a fattyacid profile in one or more fractions isolated from the microorganism.The one or more fractions isolated from the microorganism include thetotal fatty acid fraction, the sterol esters fraction, thetriacylglycerol fraction, the free fatty acid fraction, the sterolfraction, the diacylglycerol fraction, the polar fraction (including thephospholipid fraction), and combinations thereof. The fatty acid profilefor a specific fraction can include any of the fatty acid profilesassociated with the specific fraction as disclosed herein.

The invention is directed to a method of producing a mutant comprisingmutagenizing any of the microorganisms of the invention and isolatingthe mutant strain.

The invention is directed to a culture comprising one or more isolatedmicroorganisms of the invention. Various fermentation parameters forinoculating, growing, and recovering microflora, such as microalgae andthraustochytrids, are known in the art. See, e.g., U.S. Pat. No.5,130,242, incorporated by reference herein in its entirety. Liquid orsolid media can contain natural or artificial sea water. Carbon sourcesfor heterotrophic growth include, but are not limited to, glucose,fructose, xylose, saccharose, maltose, soluble starch, molasses, fucose,glucosamine, dextran, fats, oils, glycerol, sodium acetate, andmannitol. Nitrogen sources include, but are not limited to, peptone,yeast extract, polypeptone, malt extract, meat extract, casamino acid,corn steep liquor, organic nitrogen sources, sodium glutamate, urea,inorganic nitrogen sources, ammonium acetate, ammonium sulfate, ammoniumchloride, and ammonium nitrate.

A typical media for growth of the microorganism deposited under ATCCAccession No. PTA-10212 is shown in Table 1:

TABLE 1 PTA-10212 Vessel Media Ingredient concentration ranges Na₂SO₄g/L 31.0 0-50, 15-45, or 25-35 NaCl g/L 0.625 0-25, 0.1-10, or 0.5-5 KClg/L 1.0 0-5, 0.25-3, or 0.5-2 MgSO₄•7H₂O g/L 5.0 0-10, 2-8, or 3-6(NH₄)₂SO₄ g/L 0.44 0-10, 0.25-5, or 0.05-3 MSG•1H₂O g/L 6.0 0-10, 4-8,or 5-7 CaCl₂ g/L 0.29 0.1-5, 0.15-3, or 0.2-1 T 154 (yeast extract) g/L6.0 0-20, 0.1-10, or 1-7 KH₂PO₄ g/L 0.8 0.1-10, 0.5-5, or 0.6-1.8 Postautoclave (Metals) Citric acid mg/L 3.5 0.1-5000, 10-3000, or 3-2500FeSO₄•7H₂O mg/L 10.30 0.1-100, 1-50, or 5-25 MnCl₂•4H₂O mg/L 3.100.1-100, 1-50, or 2-25 ZnSO₄•7H₂O mg/L 3.10 0.01-100, 1-50, or 2-25CoCl₂•6H₂O mg/L 0.04 0-1, 0.001-0.1, or 0.01-0.1 Na₂MoO₄•2H₂O mg/L 0.040.001-1, 0.005-0.5, or 0.01-0.1 CuSO₄•5H₂O mg/L 2.07 0.1-100, 0.5-50, or1-25 NiSO₄•6H₂O mg/L 2.07 0.1-100, 0.5-50, or 1-25 Post autoclave(Vitamins) Thiamine mg/L 9.75 0.1-100, 1-50, or 5-25 Vitamin B12 mg/L0.16 0.01-100, 0.05-5, or 0.1-1 Ca½-pantothenate mg/L 2.06 0.1-100,0.1-50, or 1-10 Biotin mg/L 3.21 0.1-100, 0.1-50, or 1-10 Post autoclave(Carbon) Glycerol g/L 30.0 5-150, 10-100, or 20-50 Nitrogen Feed:Ingredient Concentration MSG•1H₂O g/L 17 0-150, 10-100, or 15-50

Typical cultivation conditions would include the following:

-   pH about 6.5-about 9.5, about 6.5-about 8.0, or about 6.8-about 7.8;-   temperature: about 15-about 30 degrees Celsius, about 18-about 28    degrees Celsius, or about 21 to about 23 degrees Celsius;-   dissolved oxygen: about 0.1-about 100% saturation, about 5-about 50%    saturation, or about 10-about 30% saturation; and/or-   glycerol controlled @: about 5-about 50 g/L, about 10-about 40 g/L,    or about 15-about 35 g/L.

In some embodiments, the microorganism deposited under ATCC AccessionNo. PTA-10212, or a mutant, variant, or recombinant thereof, growsheterotrophically on glycerol as the carbon source but does not grow onglucose as the carbon source.

A typical media for growth of the microorganism deposited under ATCCAccession No. PTA-10208 is shown in Table 2:

TABLE 2 PTA-10208 Vessel Media Ingredient concentration ranges Na₂SO₄g/L 8.8 0-25, 2-20, or 3-10 NaCl g/L 0.625 0-25, 0.1-10, or 0.5-5 KClg/L 1.0 0-5, 0.25-3, or 0.5-2 MgSO₄•7H₂O g/L 5.0 0-10, 2-8, or 3-6(NH₄)₂SO₄ g/L 0.42 0-10, 0.25-5, or 0.05-3 CaCl₂ g/L 0.29 0.1-5, 0.15-3,or 0.2-1 T 154 (yeast extract) g/L 1.0 0-20, 0.1-10, or 0.5-5 KH₂PO₄ g/L1.765 0.1-10, 0.5-5, or 1-3 Post autoclave (Metals) Citric acid mg/L46.82 0.1-5000, 10-3000, or 40-2500 FeSO₄•7H₂O mg/L 10.30 0.1-100, 1-50,or 5-25 MnCl₂•4H₂O mg/L 3.10 0.1-100, 1-50, or 2-25 ZnSO₄•7H₂O mg/L 9.30.01-100, 1-50, or 2-25 CoCl₂•6H₂O mg/L 0.04 0-1, 0.001-0.1, or 0.01-0.1Na₂MoO₄•2H₂O mg/L 0.04 0.001-1, 0.005-0.5, or 0.01-0.1 CuSO₄•5H₂O mg/L2.07 0.1-100, 0.5-50, or 1-25 NiSO₄•6H₂O mg/L 2.07 0.1-100, 0.5-50, or1-25 Post autoclave (Vitamins) Thiamine mg/L 9.75 0.1-100, 1-50, or 5-25Ca½-pantothenate mg/L 3.33 0.1-100, 0.1-50, or 1-10 Biotin mg/L 3.580.1-100, 0.1-50, or 1-10 Post autoclave (Carbon) Glucose g/L 30.0 5-150,10-100, or 20-50 Nitrogen Feed: Ingredient Concentration NH₄OH mL/L 23.60-150, 10-100, or 15-50Typical cultivation conditions would include the following:

-   pH about 6.5-about 8.5, about 6.5-about 8.0, or about 7.0-about 8.0;-   temperature: about 17-about 30 degrees Celsius, about 20-about 28    degrees Celsius, or about 22 to about 24 degrees Celsius;-   dissolved oxygen: about 2-about 100% saturation, about 5-about 50%    saturation, or about 7-about 20% saturation; and/or-   glucose controlled @: about 5-about 50 g/L, about 10-about 40 g/L,    or about 20-about 35 g/L.

In some embodiments, the culture medium comprises at least about 0.1%,at least about 0.5%, at least about 1%, at least about 1.5%, at leastabout 2%, at least about 5%, at least about 7%, at least about 10%, atleast about 20%, at least about 30%, at least about 40%, at least about50%, at least about 60%, at least about 70%, at least about 80%, or atleast about 90% dissolved oxygen, as a percentage of saturation level.In some embodiments, the culture medium comprises about 0.1% to about2%, about 0.1% to about 5%, about 0.1% to about 10%, about 0.1% to about20%, about 0.1% to about 30%, about 0.1% to about 50%, about 0.1% toabout 100%, about 5% to about 10%, about 5% to about 20%, about 5% toabout 30%, about 5% to about 50%, about 5% to about 100%, about 7% toabout 10%, about 7% to about 20%, about 7% to about 30%, about 7% toabout 50%, about 7% to about 100%, about 10% to about 20%, about 10% toabout 30%, about 10% to about 50%, about 10% to about 100%, about 20% toabout 30%, about 20% to about 50%, or about 20% to about 100% dissolvedoxygen, as a percentage of saturation level.

The invention is directed to an isolated biomass of a microorganism ofthe invention. An isolated biomass of the invention is a harvestedcellular biomass obtained by any conventional method for the isolationof a biomass, such as described in U.S. Pat. No. 5,130,242 and U.S.Appl. Publ. No. 2002/0001833, each of which are incorporated byreference herein in its entirety.

In some embodiments, the dry cell weight of the biomass isolated fromeach liter of culture is at least about 10 g, at least about 15 g, atleast about 20 g, at least about 25 g, at least about 30 g, at leastabout 50 g, at least about 60 g, at least about 70 g, at least about 80g, at least about 100 g, at least about 120 g, at least about 140 g, atleast about 160 g, at least about 180 g, or at least about 200 g aftergrowing for about 6 days to about 8 days at about 15° C. to about 30° C.in a culture medium of about pH 6.5 to about 9.5 comprising sources ofcarbon, nitrogen, and nutrients, and about 950 ppm to about 8500 ppmchloride ions. In some embodiments, the dry cell weight of the biomassisolated from each liter of culture is at least about 10 g, at leastabout 15 g, at least about 20 g, at least about 25 g, at least about 30g, at least about 50 g, at least about 60 g, at least about 70 g, atleast about 80 g, at least about 100 g, at least about 120 g, at leastabout 140 g, at least about 160 g, at least about 180 g, or at leastabout 200 g after growing for about 6 days, about 7 days, or about 8days at about 15° C., about 16° C., about 17° C., at about 18° C., atabout 19° C., at about 20° C., at about 21° C., at about 22° C., atabout 23° C., at about 24° C., at about 25° C., at about 26° C., atabout 27° C., at about 28° C., at about 29° C., or at about 30° C. in aculture medium of about pH 6.5, about pH 7, about pH 7.5, about pH 8.0,about pH 8.5, about pH 9, or about pH 9.5 comprising sources of carbon,nitrogen, and nutrients, and about 950 ppm to about 8500 ppm chlorideions. In some embodiments, the dry cell weight of the biomass isolatedfrom each liter of culture is about 10 g to about 200 g after growingfor about 6 days to about 8 days at about 15° C. to about 30° C. in aculture medium of about pH 6.5 to about pH 9.5 comprising sources ofcarbon, nitrogen, and nutrients, and about 950 ppm to about 8500 ppmchloride ions. In some embodiments, the dry cell weight of the biomassisolated from each liter of culture is about 10 g to about 200 g, about10 g to about 100 g, about 10 g to about 50 g, about 15 g to about 200g, about 15 g to about 100 g, about 15 g to about 50 g, about 20 g toabout 200 g, about 20 g to about 100 g, about 20 g to about 50 g, about50 g to about 200 g, or about 50 g to about 100 g after growing forabout 6 days, about 7 days, or about 8 days at about 15° C., about 16°C., about 17° C., at about 18° C., at about 19° C., at about 20° C., atabout 21° C., at about 22° C., at about 23° C., at about 24° C., atabout 25° C., at about 26° C., at about 27° C., at about 28° C., atabout 29° C., or at about 30° C. in a culture medium of about pH 6.5,about pH 7, about pH 7.5, about pH 8.0, about pH 8.5, about pH 9, orabout pH 9.5 comprising sources of carbon, nitrogen, and nutrients, andabout 950 ppm to about 8500 ppm chloride ions. In some embodiments, theisolated culture does not contain polyvinylpyrrolidone.

In some embodiments, the isolated culture has an omega-3 fatty acidproductivity of at least about 0.2 g/L/day, at least about 0.3 g/L/day,at least about 0.4 g/L/day, at least about 0.5 g/L/day, at least about 1g/L/day, at least about 1.2 g/L/day, at least about 1.5 g/L/day, atleast about 1.7 g/L/day, at least about 2 g/L/day, at least about 3g/L/day, at least about 3.5 g/L/day, at least about 4 g/L/day, at leastabout 4.5 g/L/day, at least about 5 g/L/day, at least about 6 g/L/day,or at least about 8 g/L/day after growing for about 6 days, about 7days, or about 8 days at about 15° C. to about 30° C. in a culturemedium of about pH 6.5 to about pH 8.5 or about pH 6.5 to about pH 9.5comprising sources of carbon, nitrogen, and nutrients, and about 950 ppmto about 8500 ppm chloride ions. In some embodiments, the isolatedculture has an omega-3 fatty acid productivity of about 0.2 g/L/day toabout 20 g/L/day, about 0.4 g/L/day to about 20 g/L/day, about 0.4g/L/day to about 2 g/L/day, about 1 g/L/day to about 2 g/L/day, about 1g/L/day to about 20 g/L/day, about 2 g/L/day to about 15 g/L/day, about2 g/L/day to about 10 g/L/day, about 3 g/L/day to about 10 g/L/day,about 4 g/L/day to about 9 g/L/day, about 4 g/L/day to about 8 g/L/day,about 4 g/L/day to about 7 g/L/day, or about 4 g/L/day to about 6g/L/day after growing for about 6 days, about 7 days, or about 8 days atabout 15° C. to about 30° C. in a culture medium of about pH 6.5 toabout pH 9.5 comprising sources of carbon, nitrogen, and nutrients, andabout 950 ppm to about 8500 ppm chloride ions.

In some embodiments, the isolated culture comprises an EPA productivityof at least about 0.2 g/L/day, at least about 0.3 g/L/day, at leastabout 0.4 g/L/day, at least about 0.5 g/L/day, at least about 0.6g/L/day, at least about 0.7 g/L/day, at least about 0.8 g/L/day, atleast about 0.9 g/L/day, at least about 1 g/L/day, at least about 1.2g/L/day, at least about 1.5 g/L/day, at least about 1.7 g/L/day, atleast about 2 g/L/day, at least about 3 g/L/day, at least about 4g/L/day, or at least about 5 g/L/day after growing for about 6 days,about 7 days, or about 8 days at about 15° C. to about 30° C. in aculture medium of about pH 6.5 to about pH 8.5 or about pH 6.5 to aboutpH 9.5 comprising sources of carbon, nitrogen, and nutrients, and about950 ppm to about 8500 ppm chloride ions. In some embodiments, the EPAproductivity is about 0.2 g/L/day to about 5 g/L/day, about 0.2 g/L/dayto about 4 g/L/day, about 0.2 g/L/day to about 3 g/L/day, about 0.2g/L/day to about 2 g/L/day, about 0.2 g/L/day to about 1 g/L/day, about0.2 g/L/day to about 0.8 g/L/day, about 0.2 g/L/day to about 0.7g/L/day, about 1 g/L/day to about 5 g/L/day, about 1 g/L/day to about 4g/L/day, about 1 g/L/day to about 3 g/L/day, or about 1 g/L/day to about2 g/L/day after growing for about 6 days, about 7 days, or about 8 daysat about 15° C. to about 30° C. in a culture medium of about pH 6.5 toabout pH 8.5 or about pH 6.5 to about pH 9.5 comprising sources ofcarbon, nitrogen, and nutrients, and about 950 ppm to about 8500 ppmchloride ions. In some embodiments, any of the aforementioned EPAproductivities are associated with any of the aforementioned omega-3fatty acid productivities. In some embodiments, the culture furthercomprises a DHA productivity of about 0 g/L/day to about 5 g/L/day,about 0 g/L/day to about 4 g/L/day, about 0 g/L/day to about 3 g/L/day,about 0 g/L/day to about 2 g/L/day, about 0 g/L/day to about 1 g/L/day,about 0.2 g/L/day to about 5 g/L/day, about 0.2 g/L/day to about 4g/L/day, about 0.2 g/L/day to about 3 g/L/day, about 0.2 g/L/day toabout 2 g/L/day, about 0.2 g/L/day to about 1 g/L/day, about 1 g/L/dayto about 5 g/L/day, about 2 g/L/day to about 5 g/L/day, about 2 g/L/dayto about 4 g/L/day, or about 2 g/L/day to about 3 g/L/day. In someembodiments, the DHA productivity is less than about 5 g/L/day, lessthan about 4 g/L/day, less than about 3 g/L/day, less than about 2g/L/day, less than about 1 g/L/day, less than about 0.5 g/L/day, lessthan about 0.2 g/L/day, or about 0 g/L/day.

In some embodiments, the fermentation volume (volume of culture) is atleast about 2 liters, at least about 10 liters, at least about 50liters, at least about 100 liters, at least about 200 liters, at leastabout 500 liters, at least about 1000 liters, at least about 10,000liters, at least about 20,000 liters, at least about 50,000 liters, atleast about 100,000 liters, at least about 150,000 liters, at leastabout 200,000 liters, or at least about 250,000 liters. In someembodiments, the fermentation volume is about 2 liters to about 300,000liters, about 2 liters, about 10 liters, about 50 liters, about 100liters, about 200 liters, about 500 liters, about 1000 liters, about10,000 liters, about 20,000 liters, about 50,000 liters, about 100,000liters, about 150,000 liters, about 200,000 liters, about 250,000liters, or about 300,000 liters.

In some embodiments, the invention is directed to an isolated biomasscomprising a fatty acid profile of the invention. In some embodiments,at least about 20%, at least about 25%, at least about 30%, at leastabout 35%, at least about 40%, at least about 45%, at least about 50%,at least about 55%, at least about 60%, at least about 65%, at leastabout 70%, at least about 75%, or at least about 80% of the dry cellweight of the biomass are fatty acids. In some embodiments, greater thanabout 20%, greater than about 25%, greater than about 30%, greater thanabout 35%, greater than about 40%, greater than about 45%, greater thanabout 50%, greater than about 55%, or greater than about 60% of the drycell weight of the biomass are fatty acids. In some embodiments, about20% to about 55%, about 20% to about 60%, about 20% to about 70%, about20% to about 80%, about 30% to about 55%, about 30% to about 70%, about30% to about 80%, about 40% to about 60%, about 40% to about 70%, about40% to about 80%, about 50% to about 60%, about 50% to about 70%, about50% to about 80%, about 55% to about 70%, about 55% to about 80%, about60% to about 70%, or about 60% to about 80% by weight of the dry cellweight of the biomass are fatty acids. In some embodiments, the biomasscomprises more than about 10%, at least about 12%, at least about 15%,at least about 20%, at least about 25%, at least about 30%, about leastabout 35%, at least about 40%, or at least about 45% by weight of thefatty acids as EPA. In some embodiments, the biomass comprises about 10%to about 55%, about 12% to about 55%, about 15% to about 55%, about 20%to about 55%, about 20% to about 40%, or about 20% to about 30% byweight of the fatty acids as EPA. In some embodiments, the biomasscomprises a triacylglycerol fraction, wherein at least about 12%, atleast about 13%, at least about 14%, at least about 15%, at least about16%, at least about 17%, at least about 18%, at least about 19%, or atleast about 20% by weight of the triacylglycerol fraction is EPA. Insome embodiments, the biomass comprises a triacylglycerol fraction,wherein the EPA content of the triacylglycerol fraction is from at leastabout 12% to about 55%, about 12% to about 50%, about 12% to about 45%,at least about 12% to about 40%, at least about 12% to about 35%, or atleast about 12% to about 30%, about 15% to about 55%, about 15% to about50%, about 15% to about 45%, about 15% to about 40%, about 15% to about35%, about 15% to about 30%, about 20% to about 55%, about 20% to about50%, about 20% to about 45%, at least about 20% to about 40%, at leastabout 20% to about 35%, or about 20% to about 30% by weight. In someembodiments, at least about 20%, at least about 25%, at least about 30%,at least about 35%, at least about 40%, at least about 50%, or at leastabout 60% by weight of the dry cell weight of the biomass is DHA. Insome embodiments, about 20% to about 60%, about 25% to about 60%, about25% to about 50%, about 25% to about 45%, about 30% to about 50%, orabout 35% to about 50% by weight of the dry cell weight of the biomassis DHA. In some embodiments, the biomass comprises about 10% or less,about 9% or less, about 8% or less, about 7% or less, about 6% or less,about 5% or less, about 4% or less, about 3% or less, about 2% or less,or about 1% or less by weight of the fatty acids as DHA. In someembodiments, the biomass comprises about 1% to about 10%, about 1% toabout 5%, about 2% to about 5%, about 3% to about 5%, or about 3% toabout 10% by weight of the fatty acids as DHA. In some embodiments, thebiomass is substantially free of DHA. In some embodiments, the biomasscomprises about 0.1% to less than about 5%, about 0.1% to about 4%,about 0.1% to about 3%, about 0.1% to about 2%, about 0.2% to less thanabout 5%, about 0.2% to about 4%, about 0.2% to about 3%, about 0.2% toabout 2%, about 0.3% to about 2%, about 0.1% to about 0.5%, about 0.2%to about 0.5%, about 0.1% to about 0.4%, about 0.2% to about 0.4%, about0.5% to about 2%, about 1% to about 2%, about 0.5% to about 1.5%, orabout 1% to about 1.5% by weight of the fatty acids as ARA. In someembodiments, the biomass comprises less than about 5%, about 4% or less,about 3% or less, about 2% or less, about 1.5% or less, about 1% orless, about 0.5% or less, about 0.4% or less, about 0.3% or less, about0.2% or less, or about 0.1% or less by weight of the fatty acids as ARA.In some embodiments, the biomass is substantially free of ARA. In someembodiments, the biomass comprises about 0.4% to about 2%, about 0.4% toabout 3%, about 0.4% to about 4%, about 0.4% to about 5%, about 0.4% toless than about 5%, about 0.5% to about 1%, about 0.5% to about 2%,about 0.5% to about 3%, about 0.5% to about 4%, about 0.5% to about 5%,about 0.5% to less than about 5%, about 1% to about 2%, about 1% toabout 3%, about 1% to about 4%, about 1% to about 5%, or about 1% toless than about 5% by weight of the fatty acids as DPA n-6. In someembodiments, the biomass comprises about 5% or less, less than about 5%,about 4% or less, about 3% or less, about 2% or less, about 1% or less,about 0.75% or less, about 0.6% or less, or about 0.5% or less by weightof the fatty acids as DPA n-6. In some embodiments, the biomass issubstantially free of DPA n-6. In some embodiments, the biomasscomprises fatty acids with about 5% or less, less than about 5%, about4% or less, about 3% or less, or about 2% or less by weight of oleicacid (18:1 n-9), linoleic acid (18:2 n-6), linolenic acid (18:3 n-3),eicosenoic acid (20:1 n-9), erucic acid (22:1 n-9), or combinationsthereof.

The characteristics of an isolated biomass of the invention areassociated with endogenous or native properties of the isolated biomassrather than exogenously introduced materials. In some embodiments, theisolated biomass does not contain polyvinylpyrrolidone or is notisolated from a culture containing polyvinylpyrrolidone.

The present invention is directed to a method of producing a biomass. Insome embodiments, the method for producing a biomass of the inventioncomprises growing any of the isolated microorganisms of the invention ormixtures thereof in a culture to produce a biomass. The presentinvention is directed to a biomass produced by the method.

The invention is directed to a microbial oil comprising a fatty acidprofile of the invention. A microbial oil of the invention is a “crudeoil” or a “refined oil” comprising a triacylglycerol fraction of atleast about 35% by weight. A “crude oil” is an oil that is extractedfrom the biomass of the microorganism without further processing. A“refined oil” is an oil that is obtained by treating a crude oil withstandard processing of refining, bleaching, and/or deodorizing. See,e.g., U.S. Pat. No. 5,130,242, incorporated by reference herein in itsentirety. A microbial oil also includes a “final oil” as describedherein, which is a refined oil that has been diluted with a vegetableoil. In some embodiments, a final oil is a refined oil that has beendiluted with high oleic sunflower oil. The term “microbial” as usedherein includes, but is not limited to, the terms “microalgal,”“thraustochytrid,” and taxonomic classifications associated with any ofthe deposited microorganisms described herein. The terms“Thraustochytriales,” “thraustochytrid,” “Schizochytrium,” and“Thraustochytrium” as used in reference to any of the microbial oils ofthe deposited microorganisms described herein are based on presenttaxonomic classifications including available phylogenetic informationand are not intended to be limiting in the event that the taxonomicclassifications are revised after the filing date of the presentapplication.

In some embodiments, a fatty acid as described herein can be a fattyacid ester. In some embodiments, a fatty acid ester includes an ester ofan omega-3 fatty acid, omega-6 fatty acid, and combinations thereof. Insome embodiments, the fatty acid ester is a DHA ester, an EPA ester, ora combination thereof. In some embodiments, an oil or fraction thereofas described herein is esterified to produce an oil or fraction thereofcomprising fatty acid esters. The term “ester” refers to the replacementof the hydrogen in the carboxylic acid group of the fatty acid moleculewith another substituent. Typical esters are known to those in the art,a discussion of which is provided by Higuchi, T. and V. Stella inPro-drugs as Novel Delivery Systems, Vol. 14, A.C.S. Symposium Series,Bioreversible Carriers in Drug Design, Ed. Edward B. Roche, AmericanPharmaceutical Association, Pergamon Press, 1987, and Protective Groupsin Organic Chemistry, McOmie ed., Plenum Press, New York, 1973. Examplesof esters include methyl, ethyl, propyl, butyl, pentyl, t-butyl, benzyl,nitrobenzyl, methoxybenzyl, benzhydryl, and trichloroethyl. In someembodiments, the ester is a carboxylic acid protective ester group,esters with aralkyl (e.g., benzyl, phenethyl), esters with lower alkenyl(e.g., allyl, 2-butenyl), esters with lower-alkoxy-lower-alkyl (e.g.,methoxymethyl, 2-methoxyethyl, 2-ethoxyethyl), esters withlower-alkanoyloxy-lower-alkyl (e.g., acetoxymethyl, pivaloyloxymethyl,1-pivaloyloxyethyl), esters with lower-alkoxycarbonyl-lower-alkyl (e.g.,methoxycarbonylmethyl, isopropoxycarbonylmethyl), esters withcarboxy-lower alkyl (e.g., carboxymethyl), esters withlower-alkoxycarbonyloxy-lower-alkyl (e.g., 1-(ethoxycarbonyloxy)ethyl,1-(cyclohexyloxycarbonyloxy)ethyl), esters with carbamoyloxy-lower alkyl(e.g., carbamoyloxymethyl), and the like. In some embodiments, the addedsubstituent is a linear or cyclic hydrocarbon group, e.g., a C1-C6alkyl, C1-C6 cycloalkyl, C1-C6 alkenyl, or C1-C6 aryl ester. In someembodiments, the ester is an alkyl ester, e.g., a methyl ester, ethylester or propyl ester. In some embodiments, the ester substituent isadded to the free fatty acid molecule when the fatty acid is in apurified or semi-purified state. Alternatively, the fatty acid ester isformed upon conversion of a triacylglycerol to an ester.

The present invention is directed to methods of producing microbialoils. In some embodiments, the method comprises growing any of theisolated microorganisms of the invention or mixtures thereof in aculture to produce a microbial oil comprising omega-3 fatty acids. Insome embodiments, the method further comprises extracting the microbialoil. In some embodiments, the method comprises extracting a microbialoil comprising omega-3 fatty acids from any of the biomasses of theinvention or mixtures thereof. In some embodiments, the method comprisesheterotrophically growing the isolated microorganism, wherein theculture comprises a carbon source as described herein. The microbial oilcan be extracted from a freshly harvested biomass or can be extractedfrom a previously harvested biomass that has been stored underconditions that prevent spoilage. Known methods can be used to culture amicroorganism of the invention, to isolate a biomass from the culture,to extract a microbial oil from the biomass, and to analyze the fattyacid profile of oils extracted from the biomass. See, e.g., U.S. Pat.No. 5,130,242, incorporated by reference herein in its entirety. Theinvention is directed to a microbial oil produced by any of the methodsof the invention.

In some embodiments, the microbial oil is extracted by an enzymeextraction method. In some embodiments, the microbial oil is extractedby a mechanical extraction method. In some embodiments, the mechanicalextraction method comprises one or more of: (1) processing a pasteurizedfermentation broth through a homogenizer to assist in cell lysis andrelease of oil from cells; (2) adding isopropyl alcohol to thefermentation broth following homogenization to break the oil and wateremulsion; (3) centrifuging the mixture to recover the oil phase; and (4)drying under vacuum with addition of antioxidants. In some embodiments,the crude oil is purified. In some embodiments, purification of thecrude oil comprises one or more of: (1) pumping the crude oil into arefining tank and heating the oil, followed by adding an acid solutionwith mixing; (2) adding a caustic solution to the oil after acidtreatment; (3) reheating the crude oil and then centrifuging to separatethe heavy phase from the refined oil; (4) removing the remaining polarcompounds, trace metals, and oxidation products from the refined oil byusing, for example, acid, TriSyl®, clay, and/or filtration; (5) chillfiltering the bleached oil to further remove high melting pointcomponents from the oil to achieve the desired level of clarity; (6)heating the oil, after which the oil is then cooled and held for aperiod of time causing the high melting triglycerides and waxes tocrystallize; (7) adding a filter aid to the chilled oil and thenremoving crystallized solids by filtration; (8) using a deodorizer afterchill filtration, operated under high temperature and vacuum, to remove,for example, peroxides and any remaining low molecular weight compoundsthat can cause off-odor and flavors; (9) transferring the oil to thedeodorizer feed tank, deaerating, and deodorizing, for example, in apacked column deodorizer; and (10) cooling, for example, under anitrogen blanket at the end of the deodorization cycle and addingsuitable antioxidants to the deodorized oil to provide oxidativestability.

In some embodiments, the microbial oil comprises a sterol estersfraction of about 0%, at least about 0.1%, at least about 0.2%, at leastabout 0.5%, at least about 1%, at least about 1.5%, at least about 2%,or at least about 5% by weight. In some embodiments, the microbial oilcomprises a sterol esters fraction of about 0% to about 1.5%, about 0%to about 2%, about 0% to about 5%, about 1% to about 1.5%, about 0.2% toabout 1.5%, about 0.2% to about 2%, or about 0.2% to about 5% by weight.In some embodiments, the microbial oil comprises a sterol estersfraction of about 5% or less, about 4% or less, about 3% or less, about2% or less, about 1% or less, about 0.5% or less, about 0.3% or less,about 0.2% or less, about 0.5% or less, about 0.4% or less, about 0.3%or less, or about 0.2% or less by weight.

In some embodiments, the microbial oil comprises a triacylglycerolfraction of at least about 35%, at least about 40%, at least about 45%,at least about 50%, at least about 55%, at least about 60%, at leastabout 65%, at least about 70%, at least about 75%, at least about 80%,at least about 85%, or at least about 90% by weight. In someembodiments, the microbial oil comprises a triacylglycerol fraction ofabout 35% to about 98%, about 35% to about 90%, about 35% to about 80%,about 35% to about 70%, about 35% to about 70%, about 35% to about 65%,about 40% to about 70%, about 40% to about 65%, about 40% to about 55%,about 40% to about 50%, about 65% to about 95%, about 75% to about 95%,about 75% to about 98%, about 80% to about 95%, about 80% to about 98%,about 90% to about 96%, about 90% to about 97%, about 90% to about 98%,about 90%, about 95%, about 97%, or about 98% by weight.

In some embodiments, the microbial oil comprises a diacylglycerolfraction of at least about 10%, at least about 11%, at least about 12%,at least about 13%, at least about 14%, at least about 15%, at leastabout 16%, at least about 17%, at least about 18%, at least about 19%,or at least about 20% by weight. In some embodiments, the microbial oilcomprises a diacylglycerol fraction of about 10% to about 45%, about 10%to about 40%, about 10% to about 35%, about 10% to about 30%, about 15%to about 40%, about 15% to about 35%, or about 15% to about 30% byweight. In some embodiments, the microbial oil comprises a1,2-diacylglycerol fraction of at least about 0.2%, at least about 0.3%,at least about 0.4%, at least about 0.5%, at least about 1%, at leastabout 5%, at least about 10%, at least about 11%, at least about 12%, atleast about 13%, at least about 14%, at least about 15%, at least about16%, at least about 17%, at least about 18%, at least about 19%, or atleast about 20% by weight. In some embodiments, the microbial oilcomprises a diacylglycerol fraction of about 0.2% to about 45%, about0.2% to about 30%, about 0.2% to about 20%, about 0.2% to about 10%,about 0.2% to about 5%, about 0.2% to about 1%, about 0.2% to about0.8%, about 0.4% to about 45%, about 0.4% to about 30%, about 0.4% toabout 20%, about 0.4% to about 10%, about 0.4% to about 5%, about 0.4%to about 1%, about 0.4% to about 0.8%, about 0.5% to about 1%, about0.5% to about 0.8%, about 10% to about 45%, about 10% to about 40%,about 10% to about 35%, about 10% to about 30%, about 15% to about 40%,about 15% to about 35%, about 15% to about 30%, or about 15% to about25% by weight. In some embodiments, the microbial oil comprises a1,3-diacylglycerol fraction of at least about 0.1%, at least about 0.2%,at least about 0.5%, at least about 1%, at least about 2%, at leastabout 2.5%, or at least about 3% by weight. In some embodiments, themicrobial oil comprises a sterol fraction of at least about 0.3%, atleast about 0.4%, at least about 0.5%, at least about 1%, at least about1.5%, at least about 2%, or at least about 5% by weight.

In some embodiments, the microbial oil comprises a sterol fraction ofabout 0.3% to about 5%, about 0.3% to about 2%, about 0.3% to about1.5%, about 0.5% to about 1.5%, about 1% to about 1.5%, about 0.5% toabout 2%, about 0.5% to about 5%, about 1% to about 2%, or about 1% toabout 5% by weight. In some embodiments, the microbial oil comprises asterol fraction of about 5% or less, about 4% or less, about 3% or less,about 2% or less, about 1.5% or less, or about 1% or less by weight.

In some embodiments, the microbial oil comprises a phospholipid fractionof at least about 2%, at least about 5%, or at least about 8% by weight.In some embodiments, the microbial oil comprises a phospholipid fractionof about 2% to about 25%, about 2% to about 20%, about 2% to about 15%,about 2% to about 10%, about 5% to about 25%, about 5% to about 20%,about 5% to about 20%, about 5% to about 10%, or about 7% to about 9% byweight. In some embodiments, the microbial oil comprises a phospholipidfraction of less than about 20%, less than about 15%, less than about10%, less than about 9%, or less than about 8% by weight. In someembodiments, the microbial oil is substantially free of phospholipids.In some embodiments, the microbial oil comprises unsaponifiables of lessthan about 2%, less than about 1.5%, less than about 1%, or less thanabout 0.5% by weight of the oil. The lipid classes present in themicrobial oil, such as a triacylglycerol fraction, can be separated byflash chromatography and analyzed by thin layer chromatography (TLC), orseparated and analyzed by other methods known in the art.

In some embodiments, the microbial oil and/or one or more fractionsthereof selected from the triacylglycerol fraction, the free fatty acidfraction, the sterol fraction, the diacylglycerol fraction, andcombinations thereof, comprises at least about 5%, at least about 10%,more than about 10%, at least about 12%, at least about 13%, at leastabout 14%, at least about 15%, at least about 16%, at least about 17%,at least about 18%, at least about 19%, at least about 20%, at leastabout 25%, at least about 30%, about least about 35%, at least about40%, or at least about 45% by weight EPA. In some embodiments, themicrobial oil and/or one or more fractions thereof selected from thetriacylglycerol fraction, the free fatty acid fraction, the sterolfraction, the diacylglycerol fraction, and combinations thereof,comprises about 5% to about 55%, about 5% to about 50%, about 5% toabout 45%, about 5% to about 40%, about 5% to about 35%, about 5% toabout 30%, about 10% to about 55%, about 10% to about 50%, about 10% toabout 45%, about 10% to about 40%, about 10% to about 35%, about 10% toabout 30%, at least about 12% to about 55%, at least about 12% to about50%, at least about 12% to about 45%, at least about 12% to about 40%,at least about 12% to about 35%, or at least about 12% to about 30%,about 15% to about 55%, about 15% to about 50%, about 15% to about 45%,about 15% to about 40%, about 15% to about 35%, about 15% to about 30%,about 15% to about 25%, about 15% to about 20%, about 20% to about 55%,about 20% to about 50%, about 20% to about 45%, about 20% to about 40%,or about 20% to about 30% by weight EPA. In some embodiments, themicrobial oil and/or one or more fractions thereof selected from thetriacylglycerol fraction, the diacylglycerol fraction, the sterolfraction, the sterol esters fraction, the free fatty acids fraction, thephospholipid fraction, and combinations thereof, comprises at leastabout 5%, at least about 10%, at least about 15%, at least about 20%, atleast about 25%, at least about 30%, at least about 35%, at least about40%, at least about 50%, or at least about 60% by weight DHA. In someembodiments, the microbial oil and/or one or more fractions thereofselected from the triacylglycerol fraction, the diacylglycerol fraction,the sterol fraction, the sterol esters fraction, the free fatty acidsfraction, the phospholipid fraction, and combinations thereof, comprisesabout 5% to about 60%, about 5% to about 55%, about 5% to about 50%,about 5% to about 40%, about 10% to about 60%, about 10% to about 50%,about 10% to about 40%, about 20% to about 60%, about 25% to about 60%,about 25% to about 50%, about 25% to about 45%, about 30% to about 50%,about 35% to about 50%, or about 30% to about 40% by weight DHA. In someembodiments, the microbial oil and/or one or more fractions thereofselected from the triacylglycerol fraction, the diacylglycerol fraction,the sterol fraction, the sterol esters fraction, the free fatty acidsfraction, the phospholipid fraction, and combinations thereof, comprisesabout 10% or less, about 9% or less, about 8% or less, about 7% or less,about 6% or less, about 5% or less, about 4% or less, about 3% or less,about 2% or less, or about 1% or less by weight DHA. In someembodiments, the microbial oil and/or one or more fractions thereofselected from the triacylglycerol fraction, the diacylglycerol fraction,the sterol fraction, the sterol esters fraction, the free fatty acidsfraction, the phospholipid fraction, and combinations thereof, comprisesabout 1% to about 10%, about 1% to about 5%, about 2% to about 5%, about3% to about 5%, or about 3% to about 10% by weight of the fatty acids asDHA. In some embodiments, the microbial oil and/or one or more fractionsthereof selected from the triacylglycerol fraction, the diacylglycerolfraction, the sterol fraction, the sterol esters fraction, the freefatty acids fraction, the phospholipid fraction, and combinationsthereof, is substantially free of DHA. In some embodiments, themicrobial oil and/or one or more fractions thereof selected from thetriacylglycerol fraction, the diacylglycerol fraction, the sterolfraction, the sterol esters fraction, the free fatty acids fraction, thephospholipid fraction, and combinations thereof, comprises about 0.1% toabout 5%, about 0.1% to less than about 5%, about 0.1% to about 4%,about 0.1% to about 3%, about 0.1% to about 2%, about 0.2% to about 5%,about 0.2% to less than about 5%, about 0.2% to about 4%, about 0.2% toabout 3%, about 0.2% to about 2%, about 0.3% to about 2%, about 0.1% toabout 0.5%, about 0.2% to about 0.5%, about 0.1% to about 0.4%, about0.2% to about 0.4%, about 0.5% to about 2%, about 1% to about 2%, about0.5% to about 1.5%, or about 1% to about 1.5% by weight ARA. In someembodiments, the microbial oil and/or one or more fractions thereofselected from the triacylglycerol fraction, the diacylglycerol fraction,the sterol fraction, the sterol esters fraction, the free fatty acidsfraction, the phospholipid fraction, and combinations thereof, comprisesabout 5% or less, less than about 5%, about 4% or less, about 3% orless, about 2% or less, about 1.5% or less, about 1% or less, about 0.5%or less, about 0.4% or less, about 0.3% or less, about 0.2% or less, orabout 0.1% or less by weight ARA. In some embodiments, the microbial oiland/or one or more fractions thereof selected from the triacylglycerolfraction, the diacylglycerol fraction, the sterol fraction, the sterolesters fraction, the free fatty acids fraction, the phospholipidfraction, and combinations thereof, is substantially free of ARA. Insome embodiments, the microbial oil and/or one or more fractions thereofselected from the triacylglycerol fraction, the diacylglycerol fraction,the sterol fraction, the sterol esters fraction, the free fatty acidsfraction, the phospholipid fraction, and combinations thereof, comprisesabout 0.4% to about 2%, about 0.4% to about 3%, about 0.4% to about 4%,about 0.4% to about 5%, about 0.4% to less than about 5%, about 0.5% toabout 1%, about 0.5% to about 2%, about 0.5% to about 3%, about 0.5% toabout 4%, about 0.5% to about 5%, about 0.5% to less than about 5%,about 1% to about 2%, about 1% to about 3%, about 1% to about 4%, about1% to about 5%, or about 1% to less than about 5% by weight DPA n-6. Insome embodiments, the microbial oil and/or one or more fractions thereofselected from the triacylglycerol fraction, the diacylglycerol fraction,the sterol fraction, the sterol esters fraction, the free fatty acidsfraction, the phospholipid fraction, and combinations thereof, comprisesabout 5%, less than about 5%, about 4% or less, about 3% or less, about2% or less, about 1% or less, about 0.75% or less, about 0.6% or less,or about 0.5% or less by weight DPA n-6. In some embodiments, themicrobial oil and/or one or more fractions thereof selected from thetriacylglycerol fraction, the diacylglycerol fraction, the sterolfraction, the sterol esters fraction, the free fatty acids fraction, thephospholipid fraction, and combinations thereof, is substantially freeof DPA n-6. In some embodiments, the microbial oil and/or one or morefractions thereof selected from the triacylglycerol fraction, thediacylglycerol fraction, the sterol fraction, the sterol estersfraction, the free fatty acids fraction, the phospholipid fraction, andcombinations thereof, comprises fatty acids with about 5% or less, lessthan about 5%, about 4% or less, about 3% or less, or about 2% or lessby weight of oleic acid (18:1 n-9), linoleic acid (18:2 n-6), linolenicacid (18:3 n-3), eicosenoic acid (20:1 n-9), erucic acid (22:1 n-9),stearidonic acid (18:4 n-3), or combinations thereof.

The triacylglycerol molecule contains 3 central carbon atoms(C(sn-1)H₂R1-(sn-2)H₂R2-C(sn-3)H₂R3), allowing for formation ofdifferent positional isomers. In some embodiments, the microbial oilcomprises a triacylglycerol fraction in which at least about 2%, atleast about 3%, at least about 5%, at least about 10%, at least about15%, at least about 20%, at least about 30%, at least about 35%, or atleast about 40% of the triacylglycerols in the triacylglycerol fractioncontain DHA at two positions in the triacylglycerol (di-substituted DHA)selected from any two of the sn-1, sn-2, and sn-3 positions, based onthe relative area percent of peaks on an HPLC chromatograph. In someembodiments, the microbial oil comprises a triacylglycerol fraction inwhich about 2% to about 55%, about 2% to about 50%, about 2% to about45%, about 2% to about 40%, about 2% to about 35%, about 2% to about30%, about 2% to about 25%, about 5% to about 55%, about 5% to about50%, about 5% to about 45%, about 5% to about 40%, about 5% to about35%, about 5% to about 30%, about 5% to about 25%, about 10% to about55%, about 10% to about 50%, about 10% to about 45%, about 10% to about40%, about 10% to about 35%, about 10% to about 30%, about 10% to about25%, about 10% to about 20%, about 20% to about 40%, about 20% to about35%, or about 20% to about 25% of the triacylglycerols in thetriacylglycerol fraction contain EPA at two positions in thetriacylglycerol selected from any two of the sn-1, sn-2, or sn-3positions, based on the relative area percent of peaks on an HPLCchromatograph. In some embodiments, the microbial oil comprises atriacylglycerol fraction in which at least about 0.5%, at least about1%, at least about 1.5%, or at least about 2% of the triacylglycerols inthe triacylglycerol fraction contain DHA at all of the sn-1, sn-2, andsn-3 positions (tri-substituted DHA), based on the relative area percentof peaks on an HPLC chromatograph. In some embodiments, the microbialoil comprises a triacylglycerol fraction in which about 0.5% to about5%, about 0.5% to about 3%, about 0.5% to about 2.5%, about 0.5% toabout 2%, about 1% to about 5%, about 1% to about 3%, or about 1% toabout 2% of the triacylglycerols in the triacylglycerol fraction containDHA at all of the sn-1, sn-2, and sn-3 positions, based on the relativearea percent of peaks on an HPLC chromatograph. In some embodiments, themicrobial oil comprises a triacylglycerol fraction in which at leastabout 10%, at least about 15%, at least about 20%, at least about 25%,at least about 30%, at least about 35%, at least about 40%, at leastabout 45%, at least about 50%, at least about 55%, or at least about 60%of the triacylglycerols in the triacylglycerol fraction contain DHA atone position in the triacylglycerol selected from any one of the sn-1,sn-2, or sn-3 positions, based on the relative area percent of peaks onan HPLC chromatograph. In some embodiments, the microbial oil comprisesa triacylglycerol fraction in which about 10% to about 80%, about 10% toabout 70%, about 10% to about 60%, about 15% to about 80%, about 15% toabout 75%, about 15% to about 70%, about 15% to about 65%, about 15% toabout 60%, about 35% to about 80%, about 35% to about 75%, about 35% toabout 65%, about 35% to about 60%, about 40% to about 80%, about 40% toabout 75%, about 40% to about 70%, about 40% to about 65%, about 40% toabout 60%, or about 40% to about 55% of the triacylglycerols in thetriacylglycerol fraction contain DHA at one position in thetriacylglycerol selected from any one of the sn-1, sn-2, and sn-3positions, based on the relative area percent of peaks on an HPLCchromatograph.

In some embodiments the microbial oil comprises fatty acids wherein thefatty acids further comprise omega-3 polyunsaturated fatty acids whereinthe omega-3 polyunsaturated fatty acids comprise DHA and EPA in anamount of about ≧90%, by weight, of the total amount of omega-3polyunsaturated fatty acids and the amount of EPA, by weight, is fromabout 28% to about 36% of the total amount of DHA and EPA, and theamount of DHA, by weight, is from about 54% to about 62% of the totalamount of DHA and EPA.

In another embodiment, microbial oil comprises omega-3 polyunsaturatedfatty acids comprising DHA and EPA in an amount of about ≧90%, byweight, of the total amount of omega-3 polyunsaturated fatty acids,wherein the amount of EPA, by weight, is from about 19% to about 55% ofthe total amount of DHA and EPA, and the amount of DHA, by weight, isfrom about 35% to about 71% of the total amount of DHA and EPA.

In other embodiments, the microbial oil comprises omega-3polyunsaturated fatty acids comprising DHA and EPA in an amount of about≧90%, by weight, of the total amount of omega-3 polyunsaturated fattyacids, wherein the amount of EPA, by weight, is from about 19% to about43% of the total amount of DHA and EPA, and the amount of DHA, byweight, is from about 35% to about 47% of the total amount of DHA andEPA.

In a further embodiment, the microbial oil comprises omega-3polyunsaturated fatty acids comprising DHA and EPA in an amount of about≧90%, by weight, of the total amount of omega-3 polyunsaturated fattyacids, wherein the amount of EPA, by weight, is from about 27% to about54% of the total amount of DHA and EPA, and the amount of DHA, byweight, is from about 36% to about 63% of the total amount of DHA andEPA.

In yet a further embodiment, the microbial oil comprises omega-3polyunsaturated fatty acids comprising DHA and EPA in an amount of about≧90%, by weight, of the total amount of omega-3 polyunsaturated fattyacids, wherein the amount of EPA, by weight, is from about 26% to about38% of the total amount of DHA and EPA, and the amount of DHA, byweight, is from about 52% to about 64% of the total amount of DHA andEPA.

In yet another embodiment, the microbial oil comprises omega-3polyunsaturated fatty acids comprising DHA and EPA in an amount of about≧90%, by weight, of the total amount of omega-3 polyunsaturated fattyacids, and DPA n-3 in an amount of from about 0% to about 10%, byweight, of the total amount of omega-3 polyunsaturated fatty acids,wherein the amount of EPA, by weight, is from about 19% to about 55% ofthe total amount of DHA and EPA, and the amount of DHA, by weight, isfrom about 35% to about 71% of the total amount of DHA and EPA.

In a still further embodiment, the microbial oil comprises omega-3polyunsaturated fatty acids comprising DHA and EPA in an amount of about≧90%, by weight, of the total amount of omega-3 polyunsaturated fattyacids, and DPA n-3 in an amount of from about 0% to about 10%, byweight, of the total amount of omega-3 polyunsaturated fatty acids,wherein the amount of EPA, by weight, is from about 19% to about 43% ofthe total amount of DHA and EPA, and the amount of DHA, by weight, isfrom about 35% to about 47% of the total amount of DHA and EPA.

In yet still another embodiment, the microbial oil comprises omega-3polyunsaturated fatty acids comprising DHA and EPA in an amount of about≧90%, by weight, of the total amount of omega-3 polyunsaturated fattyacids, and DPA n-3 in an amount of from about 0% to about 10%, byweight, of the total amount of omega-3 polyunsaturated fatty acids,wherein the amount of EPA, by weight, is from about 27% to about 54% ofthe total amount of DHA and EPA, and the amount of DHA, by weight, isfrom about 36% to about 63% of the total amount of DHA and EPA.

In another embodiment, the microbial oil comprises omega-3polyunsaturated fatty acids comprising DHA and EPA in an amount of about≧90%, by weight, of the total amount of omega-3 polyunsaturated fattyacids, and DPA n-3 in an amount of from about 0% to about 10%, byweight, of the total amount of omega-3 polyunsaturated fatty acids,wherein the amount of EPA, by weight, is from about 26% to about 38% ofthe total amount of DHA and EPA, and the amount of DHA, by weight, isfrom about 52% to about 64% of the total amount of DHA and EPA.

In another embodiment, the microbial oil comprises omega-3polyunsaturated fatty acids comprising DHA and EPA in an amount of about≧90%, by weight, of the total amount of omega-3 polyunsaturated fattyacids, and DPA n-3 in an amount of from about 0% to about 10%, byweight, of the total amount of omega-3 polyunsaturated fatty acids,wherein the amount of EPA, by weight, is from about 28% to about 36% ofthe total amount of DHA and EPA and the amount of DHA, by weight, isfrom about 54% to about 62% of the total amount of DHA and EPA.

In yet another embodiment, the microbial oil comprises omega-3polyunsaturated fatty acids comprising DHA and EPA in an amount of about≧90%, by weight, of the total amount of omega-3 polyunsaturated fattyacids, and DPA n-3 in an amount of from about 0% to about 2%, by weight,of the total amount of omega-3 polyunsaturated fatty acids, wherein theamount of EPA, by weight, is from about 10% to about 25% of the totalamount of DHA and EPA and the amount of DHA, by weight, is from about75% to about 90% of the total amount of DHA and EPA.

In some embodiments, the total amount of omega-3 polyunsaturated fattyacids in the microbial oil is at least about 400 mg per one gram of oil.

In other embodiments, the total amount of omega-3 polyunsaturated fattyacids in the microbial oil is at least about 500 mg per one gram of oil.

In still further embodiments, the total amount of omega-3polyunsaturated fatty acids in the microbial oil is from about 400 mg toabout 750 mg per one gram of oil.

In some embodiments, the microbial oil comprises from about 120 mg toabout 220 mg EPA per one gram of oil and from about 240 mg to about 450mg DHA per one gram of oil.

In some embodiments, the microbial oil comprises from about 120 mg toabout 220 mg EPA per one gram of oil and from about 240 mg to about 450mg DHA per one gram of oil.

In other embodiments, the microbial oil comprises from about 130 mg toabout 195 mg EPA per one gram of oil and from about 320 mg to about 480mg DHA per one gram of oil.

In a further embodiment, the microbial oil comprises from about 150 mgto about 300 mg EPA per one gram of oil; from about 200 mg to about 400mg DHA per one gram of oil; and from about 0 to about 55 mg DPA n-3 perone gram of oil.

In a still further embodiment, the microbial oil comprises from about 50mg to about 150 mg EPA per one gram of oil; from about 410 mg to about540 mg DHA per one gram of oil; and from about 0 to about 12 mg DPA n-3per one gram of oil

In some embodiments, the microbial oil comprises a ratio of EPA:DHA of1:1 to 1:30 or 1:1 to 1:3 by weight of total omega-3 polyunsaturatedfatty acids.

In some embodiments, the microbial oil comprises a ratio of EPA:DHA of1:1 to 1:2.5 by weight of total omega-3 polyunsaturated fatty acids.

In another embodiment, the microbial oil comprises a ratio of EPA:DHA of1:4 to 1:7 by weight of total omega-3 polyunsaturated fatty acids.

In some embodiments, the microbial oil comprises a ratio of EPA:DHA ofat least 1:1, at least 1:1.5, at least 1:2, at least 1:2.5, at least1:3, or at least 1:4 by weight of total omega-3 polyunsaturated fattyacids. Useful ranges can be selected between any of these values, forexample, a ratio of EPA:DHA of 1:1 to 1:1.5, 1:1 to 1:2, 1:1.5 to 1:2,1:1 to 1:2.5, 1:2 to 1:2.5, and 1:4 to 1:7 by weight of total omega-3polyunsaturated fatty acids.

In yet a further embodiment, the microbial oil is produced by theSchizochytrium sp.

The invention is directed to compositions comprising a microorganism ofthe invention, an isolated biomass of the invention, a microbial oil ofthe invention, or combinations thereof.

A microorganism, biomass, or microbial oil of the invention can befurther chemically or physically modified or processed based on therequirements of the composition by any known technique.

Microorganism cells or biomasses can be dried prior to use in acomposition by methods including, but not limited to, freeze drying, airdrying, spray drying, tunnel drying, vacuum drying (lyophilization), anda similar process. Alternatively, a harvested and washed biomass can beused directly in a composition without drying. See, e.g., U.S. Pat. Nos.5,130,242 and 6,812,009, each of which is incorporated by referenceherein in its entirety.

Microbial oils of the invention can be used as starting material to moreefficiently produce a product enriched in a fatty acid such as EPA. Forexample, the microbial oils of the invention can be subjected to variouspurification techniques known in the art, such as distillation or ureaadduction, to produce a higher potency product with higherconcentrations of EPA or another fatty acid. The microbial oils of theinvention can also be used in chemical reactions to produce compoundsderived from fatty acids in the oils, such as esters and salts of EPA oranother fatty acid.

A composition of the invention can include one or more excipients. Asused herein, “excipient” refers to a component, or mixture ofcomponents, that is used in a composition of the present invention togive desirable characteristics to the composition, including foods aswell as pharmaceutical, cosmetic, and industrial compositions. Anexcipient of the present invention can be described as a“pharmaceutically acceptable” excipient when added to a pharmaceuticalcomposition, meaning that the excipient is a compound, material,composition, salt, and/or dosage form which is, within the scope ofsound medical judgment, suitable for contact with tissues of humanbeings and non-human animals without excessive toxicity, irritation,allergic response, or other problematic complications over the desiredduration of contact commensurate with a reasonable benefit/risk ratio.In some embodiments, the term “pharmaceutically acceptable” meansapproved by a regulatory agency of the Federal or a state government orlisted in the U.S. Pharmacopeia or other generally recognizedinternational pharmacopeia for use in animals, and more particularly inhumans. Various excipients can be used. In some embodiments, theexcipient can be, but is not limited to, an alkaline agent, astabilizer, an antioxidant, an adhesion agent, a separating agent, acoating agent, an exterior phase component, a controlled-releasecomponent, a solvent, a surfactant, a humectant, a buffering agent, afiller, an emollient, or combinations thereof. Excipients in addition tothose discussed herein can include excipients listed in, though notlimited to, Remington: The Science and Practice of Pharmacy, 21^(st) ed.(2005). Inclusion of an excipient in a particular classification herein(e.g., “solvent”) is intended to illustrate rather than limit the roleof the excipient. A particular excipient can fall within multipleclassifications.

Compositions of the invention include, but are not limited to, foodproducts, pharmaceutical compositions, cosmetics, and industrialcompositions.

In some embodiments, the composition is a food product. A food productis any food for non-human animal or human consumption, and includes bothsolid and liquid compositions. A food product can be an additive toanimal or human foods. Foods include, but are not limited to, commonfoods; liquid products, including milks, beverages, therapeutic drinks,and nutritional drinks; functional foods; supplements; nutraceuticals;infant formulas, including formulas for pre-mature infants; foods forpregnant or nursing women; foods for adults; geriatric foods; and animalfoods.

In some embodiments, a microorganism, biomass, or microbial oil of theinvention can be used directly as or included as an additive within oneor more of: an oil, shortening, spread, other fatty ingredient,beverage, sauce, dairy-based or soy-based food (such as milk, yogurt,cheese and ice-cream), a baked good, a nutritional product, e.g., as anutritional supplement (in capsule or tablet form), a vitaminsupplement, a diet supplement, a powdered drink, and a finished orsemi-finished powdered food product. In some embodiments, thenutritional supplement is in the form of a vegetarian capsule that isnot formed from and does not contain any components from an animalsource.

A partial list of food compositions that can include a microbial oil ofthe invention includes, but is not limited to, soya based products(milks, ice creams, yogurts, drinks, creams, spreads, whiteners); soupsand soup mixes; doughs, batters, and baked food items including, forexample, fine bakery wares, breakfast cereals, cakes, cheesecakes, pies,cupcakes, cookies, bars, breads, rolls, biscuits, muffins, pastries,scones, croutons, crackers, sweet goods, snack cakes, pies,granola/snack bars, and toaster pastries; candy; hard confectionery;chocolate and other confectionery; chewing gum; liquid food products,for example milks, energy drinks, infant formula, carbonated drinks,teas, liquid meals, fruit juices, fruit-based drinks, vegetable-baseddrinks; multivitamin syrups, meal replacers, medicinal foods, andsyrups; powdered beverage mixes; pasta; processed fish products;processed meat products; processed poultry products; gravies and sauces;condiments (ketchup, mayonnaise, etc.); vegetable oil-based spreads;dairy products; yogurt; butters; frozen dairy products; ice creams;frozen desserts; frozen yogurts; semi-solid food products such as babyfood; puddings and gelatin desserts; processed and unprocessed cheese;pancake mixes; food bars including energy bars; waffle mixes; saladdressings; replacement egg mixes; nut and nut-based spreads; saltedsnacks such as potato chips and other chips or crisps, corn chips,tortilla chips, extruded snacks, popcorn, pretzels, potato crisps, andnuts; and specialty snacks such as dips, dried fruit snacks, meatsnacks, pork rinds, health food bars and rice/corn cakes.

In some embodiments, a microbial oil of the invention can be used tosupplement infant formula. Infant formula can be supplemented with amicrobial oil of the invention alone or in combination with a physicallyrefined oil derived from an arachidonic acid (ARA)-producingmicroorganism. An ARA-producing microorganism, for example, isMortierella alpina or Mortierella sect. schmuckeri. Alternatively,infant formulas can be supplemented with a microbial oil of theinvention in combination with an oil rich in ARA, including ARASCO®(Martek Biosciences, Columbia, Md.).

In some embodiments, the composition is an animal feed. An “animal”includes non-human organisms belonging to the kingdom Animalia, andincludes, without limitation, aquatic animals and terrestrial animals.The term “animal feed” or “animal food” refers to any food intended fornon-human animals, whether for fish; commercial fish; ornamental fish;fish larvae; bivalves; mollusks; crustaceans; shellfish; shrimp; larvalshrimp; artemia; rotifers; brine shrimp; filter feeders; amphibians;reptiles; mammals; domestic animals; farm animals; zoo animals; sportanimals; breeding stock; racing animals; show animals; heirloom animals;rare or endangered animals; companion animals; pet animals such as dogs,cats, guinea pigs, rabbits, rats, mice, or horses; primates such asmonkeys (e.g., cebus, rhesus, African green, patas, cynomolgus, andcercopithecus), apes, orangutans, baboons, gibbons, and chimpanzees;canids such as dogs and wolves; felids such as cats, lions, and tigers;equids such as horses, donkeys, and zebras; food animals such as cows,cattle, pigs, and sheep; ungulates such as deer and giraffes; or rodentssuch as mice, rats, hamsters and guinea pigs; and so on. An animal feedincludes, but is not limited to, an aquaculture feed, a domestic animalfeed including pet feed, a zoological animal feed, a work animal feed, alivestock feed, and combinations thereof.

In some embodiments, the composition is a feed or feed supplement forany animal whose meat or products are consumed by humans, such as anyanimal from which meat, eggs, or milk is derived for human consumption.When fed to such animals, nutrients such as LC-PUFAs can be incorporatedinto the flesh, milk, eggs or other products of such animals to increasetheir content of these nutrients.

In some embodiments, the composition is a spray-dried material that canbe crumbled to form particles of an appropriate size for consumption byzooplankton, artemia, rotifers, and filter feeders. In some embodiments,the zooplankton, artemia, or rotifers fed by the composition are in turnfed to fish larvae, fish, shellfish, bivalves, or crustaceans.

In some embodiments, the composition is a pharmaceutical composition.Suitable pharmaceutical compositions include, but are not limited to, ananti-inflammatory composition, a drug for treatment of coronary heartdisease, a drug for treatment of arteriosclerosis, a chemotherapeuticagent, an active excipient, an osteoporosis drug, an anti-depressant, ananti-convulsant, an anti-Helicobacter pylori drug, a drug for treatmentof neurodegenerative disease, a drug for treatment of degenerative liverdisease, an antibiotic, a cholesterol lowering composition, and atriacylglycerol lowering composition. In some embodiments, thecomposition is a medical food. A medical food includes a food that is ina composition to be consumed or administered externally under thesupervision of a physician and that is intended for the specific dietarymanagement of a condition, for which distinctive nutritionalrequirements, based on recognized scientific principles, are establishedby medical evaluation.

In some embodiments, the microbial oil can be formulated in a dosageform. Dosage forms can include, but are not limited to, tablets,capsules, cachets, pellets, pills, powders and granules, and parenteraldosage forms, which include, but are not limited to, solutions,suspensions, emulsions, and dry powders comprising an effective amountof the microbial oil. It is also known in the art that such formulationscan also contain pharmaceutically acceptable diluents, fillers,disintegrants, binders, lubricants, surfactants, hydrophobic vehicles,water soluble vehicles, emulsifiers, buffers, humectants, moisturizers,solubilizers, preservatives and the like. Administration forms caninclude, but are not limited to, tablets, dragees, capsules, caplets,and pills, which contain the microbial oil and one or more suitablepharmaceutically acceptable carriers. For oral administration, themicrobial oil can be combined with pharmaceutically acceptable carrierswell known in the art. Such carriers enable the microbial oils of theinvention to be formulated as tablets, pills, dragees, capsules,liquids, gels, syrups, slurries, suspensions and the like, for oralingestion by a subject to be treated. In some embodiments, the dosageform is a tablet, pill or caplet. Pharmaceutical preparations for oraluse can be obtained by adding a solid excipient, optionally grinding theresulting mixture, and processing the mixture of granules, after addingsuitable auxiliaries, if desired, to obtain tablets or dragee cores.Suitable excipients include, but are not limited to, fillers such assugars, including, but not limited to, lactose, sucrose, mannitol, andsorbitol; cellulose preparations such as, but not limited to, maizestarch, wheat starch, rice starch, potato starch, gelatin, gumtragacanth, methyl cellulose, hydroxypropylmethyl cellulose, sodiumcarboxymethyl cellulose, and polyvinylpyrrolidone (PVP). If desired,disintegrating agents can be added, such as, but not limited to, thecross-linked polyvinylpyrrolidone, agar, or alginic acid or a saltthereof such as sodium alginate. Pharmaceutical preparations that can beused orally include, but are not limited to, push-fit capsules made ofgelatin, as well as soft, sealed capsules made of gelatin and aplasticizer, such as glycerol or sorbitol. In some embodiments, thedosage form is a vegetarian dosage form, in which the dosage form is notformed from and does not contain any components from an animal source.In some embodiments, the vegetarian dosage form is a vegetarian capsule.

In some embodiments the oral dosage form is a vegetarian gel capsulecomprising modified cornstarch, carrageenan, glycerin, sorbitol,purified water, beta-carotene and caramel powder.

In some embodiments the oral dosage form is formulated with an oilcomprised of about 100 mg, about 200 mg, about 300 mg about 400 mg,about 500 mg, about 550 mg, or about 600 mg of DHA and EPA content perone gram of oil.

In some embodiments the oral dosage form is formulated with an oilcomprised of from about 300 mg to about 700 mg of DHA and EPA contentper one gram of oil.

In a further embodiment, the oral dosage form is formulated with an oilcomprised of from about 360 mg to about 670 mg of DHA and EPA contentper one gram of oil.

In some embodiments the gel capsule can be formulated with an oilcomprised of about 100 mg, about 200 mg, about 300 mg about 400 mg,about 500 mg, about 550 mg, or about 600 mg of the total amount of DHAand EPA content per one gram of oil.

In some embodiments the gel capsule can be formulated with an oilcomprised of from about 300 mg to about 700 mg of DHA and EPA contentper one gram of oil.

In a further embodiment, the gel capsule can be formulated with an oilcomprised of from about 360 mg to about 670 mg of DHA and EPA contentper one gram of oil.

In yet a further embodiment, the total amount of DHA and EPA is at leastabout 400 mg per one gram of oil.

In still yet a further embodiment, the total amount of omega-3polyunsaturated fatty acids is at least about 400 mg per one gram ofoil.

In a still further embodiment, the total amount of DHA and EPA is about400 mg per one gram of oil.

In an even further embodiment, the total amount of DHA and EPA is atleast about 500 mg per one gram of oil.

In an even further embodiment, the total amount of omega-3polyunsaturated fatty acids is at least about 500 mg per one gram ofoil.

In another embodiment, the total amount of DHA and EPA is about 500 mgper one gram of oil.

In some embodiments, the composition is a cosmetic. Cosmetics include,but are not limited to, emulsions, creams, lotions, masks, soaps,shampoos, washes, facial creams, conditioners, make-ups, bath agents,and dispersion liquids. Cosmetic agents can be medicinal ornon-medicinal.

In some embodiments, the composition is an industrial composition. Insome embodiments, the composition is a starting material for one or moremanufactures. A manufacture includes, but is not limited to, a polymer;a photographic photosensitive material; a detergent; an industrial oil;or an industrial detergent. For example, U.S. Pat. No. 7,259,006describes use of DHA-containing fat and oil for production of behenicacid and production of photographic sensitive materials using behenicacid.

In some embodiments, the compositions can be used in the treatment of acondition in humans or non-human animals. In some embodiments, thecompositions can be used for nutrition in humans or non-human animals.

The terms “treat” and “treatment” refer to both therapeutic treatmentand prophylactic or preventative measures, wherein the object is toprevent or slow down (lessen) an undesired physiological condition,disease, or disorder, or to obtain beneficial or desired clinicalresults. For purposes of this invention, beneficial or desired clinicalresults include, but are not limited to, alleviation or elimination ofthe symptoms or signs associated with a condition, disease, or disorder;diminishment of the extent of a condition, disease, or disorder;stabilization of a condition, disease, or disorder, (i.e., where thecondition, disease, or disorder is not worsening); delay in onset orprogression of the condition, disease, or disorder; amelioration of thecondition, disease, or disorder; remission (whether partial or total andwhether detectable or undetectable) of the condition, disease, ordisorder; or enhancement or improvement of a condition, disease, ordisorder. Treatment includes eliciting a clinically significant responsewithout excessive side effects. Treatment also includes prolongingsurvival as compared to expected survival if not receiving treatment.

In some embodiments, the composition is used to treat a condition,disease, or disorder such as acne, acute inflammation, age relatedmaculopathy, allergy, Alzheimer's, arthritis, asthma, atherosclerosis,autoimmune disease, blood lipid disorder, breast cysts, cachexia,cancer, cardiac restenosis, cardiovascular diseases, chronicinflammation, coronary heart disease, cystic fibrosis, degenerativedisorder of the liver, diabetes, eczema, gastrointestinal disorder,heart disease, high triacylglycerol levels, hypertension, hyperactivity,immunological diseases, inhibiting tumor growth, inflammatoryconditions, intestinal disorders, kidney dysfunction, leukemia, majordepression, multiple sclerosis, neurodegenerative disorder,osteoarthritis, osteoporosis, peroxisomal disorder, preeclampsia,preterm birth, psoriasis, pulmonary disorder rheumatoid arthritis, riskof heart disease, or thrombosis.

In some embodiments, the composition is used to increase the length ofgestation of a fetus in the third trimester.

In some embodiments, the composition is used to control blood pressure.

In some embodiments, the composition is used to improve or maintaincognitive function.

In some embodiments, the composition is used to improve or maintainmemory.

In some embodiments, the composition is used to maintain a healthyheart.

The composition or dosage form can be administered into the body of asubject by any route compatible with the composition or dosage form. Asubstance is considered to be “administered” if the substance isintroduced into the body of the subject by the subject, or if anotherperson, a machine, or a device introduces the substance into the body ofthe subject. “Administering,” therefore, includes, e.g.,self-administration, administration by others, and indirectadministration. The term “continuous” or “consecutive,” as used hereinin reference to “administration,” means that the frequency ofadministration is at least once daily. Note, however, that the frequencyof administration can be greater than once daily and still be“continuous” or “consecutive,” e.g., twice or even three times daily, aslong as the dosage levels as specified herein are not exceeded. Themeans and methods for administration are known in the art and an artisancan refer to various pharmacologic references for guidance. For example,“Modern Pharmaceutics,” Banker & Rhodes, Informa Healthcare, USA, 4thed. (2002); and “Goodman & Gilman's The Pharmaceutical Basis ofTherapeutics,” McGraw-Hill Companies, Inc., New York, 10th ed. (2001)can be consulted.

By “subject,” “individual,” or “patient” is meant any subject, whetherhuman or non-human, for whom diagnosis, prognosis, therapy, oradministration of the composition or dosage form is desired. Mammaliansubjects include, but are not limited to, humans; domestic animals; farmanimals; zoo animals; sport animals; pet animals such as dogs, cats,guinea pigs, rabbits, rats, mice, or horses; primates such as monkeys(e.g., cebus, rhesus, African green, patas, cynomolgus, andcercopithecus), apes, orangutans, baboons, gibbons, and chimpanzees;canids such as dogs and wolves; felids such as cats, lions, and tigers;equids such as horses, donkeys, and zebras; food animals such as cows,cattle, pigs, and sheep; ungulates such as deer and giraffes; rodentssuch as mice, rats, hamsters and guinea pigs; and so on. The termsubject also encompasses model animals, e.g., disease model animals. Insome embodiments, the term subject includes valuable animals, eithereconomically or otherwise, e.g., economically important breeding stock,racing animals, show animals, heirloom animals, rare or endangeredanimals, or companion animals. In certain embodiments, the subject is ahuman subject. In certain embodiments, the subject is a non-humansubject.

The composition can be administered as a “nutritional amount,”“therapeutically effective amount,” a “prophylactically effectiveamount,” a “therapeutic dose,” or a “prophylactic dose.” A “nutritionalamount” refers to an amount effective, at dosages and for periods oftime necessary, to achieve a desired nutritional result. A nutritionalresult can be, e.g., increased levels of a desirable fatty acidcomponent in a subject. A “therapeutically effective amount” or“therapeutic dose” refers to an amount effective, at dosages and forperiods of time necessary, to achieve a desired therapeutic result. Atherapeutic result can be, e.g., lessening of symptoms, prolongedsurvival, improved mobility, and the like. A therapeutic result need notbe a “cure.” A “prophylactically effective amount” or “prophylacticdose” refers to an amount effective, at dosages and for periods of timenecessary, to achieve the desired prophylactic result. Typically, sincea prophylactic dose is used in subjects prior to or at an earlier stageof disease, a prophylactically effective amount will be less than atherapeutically effective amount for treatment of an advanced stage ofdisease.

Various dosage amounts of the composition, dosage form, orpharmaceutical composition can be administered to a subject, based onthe amount of EPA or other fatty acid component of the microorganism,biomass, or microbial oil to be administered to the subject. The terms“daily dosage,” “daily dosage level,” and “daily dosage amount” referherein to the total amount of EPA or other fatty acid componentadministered per day (per 24 hour period). Thus, for example,administration of EPA to a subject at a daily dosage of 2 mg means thatthe subject receives a total of 2 mg of EPA on a daily basis, whetherthe EPA is administered as a single dosage form comprising 2 mg EPA, oralternatively, four dosage forms comprising 0.5 mg EPA each (for a totalof 2 mg EPA). In some embodiments, the daily amount of EPA isadministered in a single dosage form, or in two dosage forms. The dosageforms of the present invention can be taken in a single application ormultiple applications. For example, if four tablets are taken daily,each tablet comprising 0.5 mg EPA, then all four tablets can be takenonce daily, or 2 tablets can be taken twice daily, or 1 tablet can betaken every 6 hours. In some embodiments, the daily dosage is about 100mg to about 15 g of EPA. In some embodiments, the daily dosage is about0.5 mg to about 250 mg, about 100 mg to about 250 mg, about 100 mg toabout 500 mg, about 100 mg to about 1 g, about 1 g to about 2.5 g, about1 g to about 5 g, about 1 g to about 10 g, about 1 g to about 15 g,about 5 g to about 10 g, about 5 g to about 15 g, about 10 g to about 15g, about 100 mg to about 10 g, about 100 mg to about 5 g, or about 100mg to about 2.5 g of EPA, DHA, or a combination thereof. In someembodiments, the composition is a dosage form that comprises about 0.5mg to about 250 mg, 100 mg to about 250 mg, about 0.5 mg to about 500mg, about 100 mg to about 500 mg, about 0.5 mg to about 1 g, or about100 mg to about 1 g of EPA, DHA, or a combination thereof per dosageform.

Administration of the compositions or dosage forms of the presentinvention can be achieved using various regimens. For example, in someembodiments, administration occurs daily on consecutive days, oralternatively, occurs every other day (bi-daily). Administration canoccur on one or more days.

Administration of the compositions and dosage forms can be combined withother regimens used for treatment of the condition. For example, themethod of the present invention can be combined with diet regimens(e.g., low carbohydrate diets, high protein diets, high fiber diets,etc.), exercise regimens, weight loss regimens, smoking cessationregimens, or combinations thereof. The method of the present inventioncan also be used in combination with other pharmaceutical products inthe treatment of the condition. The compositions or dosage forms of thepresent invention can be administered before or after other regimens orpharmaceutical products.

The invention is directed to kits or packages containing one or moreunits of a composition of the invention. Kits or packages can includeunits of a food product, pharmaceutical composition, cosmetic, orindustrial composition comprising the microorganism, biomass, ormicrobial oil of the invention, or combinations thereof. Kits orpackages can also include an additive comprising the microorganism,biomass, or microbial oil of the invention, or combinations thereof forpreparation of a food, cosmetic, pharmaceutical composition, orindustrial composition.

In some embodiments, the kit or package contains one or more units of apharmaceutical composition to be administered according to the methodsof the present invention. The kit or package can contain one dosageunit, or more than one dosage unit (i.e., multiple dosage units). Ifmultiple dosage units are present in the kit or package, the multipledosage units can be optionally arranged for sequential administration.

The kits of the present invention can optionally contain instructionsassociated with the units or dosage forms of the kits. Such instructionscan be in a form prescribed by a governmental agency regulating themanufacture, use or sale of pharmaceutical products, which noticereflects approval by the agency of the manufacture, use or sale forhuman administration to treat a condition or disorder. The instructionscan be in any form which conveys information on the use of the units ordosage forms in the kit according to the methods of the invention. Forexample, the instructions can be in the form of printed matter, or inthe form of a pre-recorded media device.

In the course of examination of a patient, a medical professional candetermine that administration of one of the methods of the presentinvention is appropriate for the patient, or the physician can determinethat the patient's condition can be improved by the administration ofone of the methods of the present invention. Prior to prescribing anyregimen, the physician can counsel the patient, for example, on thevarious risks and benefits associated with the regimen. The patient canbe provided full disclosure of all known and suspected risks associatedwith the regimen. Such counseling can be provided verbally, as well asin written form. In some embodiments, the physician can provide thepatient with literature materials on the regimen, such as productinformation, educational materials, and the like.

The present invention is directed to methods of educating consumersabout the methods of treatment, the method comprising distributing thedosage forms with consumer information at a point of sale. In someembodiments, the distribution will occur at a point of sale having apharmacist or healthcare provider.

The term “consumer information” can include, but is not limited to, anEnglish language text, non-English language text, visual image, chart,telephone recording, website, and access to a live customer servicerepresentative. In some embodiments, consumer information will providedirections for use of the dosage forms according to the methods of thepresent invention, appropriate age use, indication, contraindications,appropriate dosing, warnings, telephone number or website address. Insome embodiments, the method further comprises providing professionalinformation to relevant persons in a position to answer consumerquestions regarding use of the disclosed regimens according to themethods of the present invention. The term “professional information”includes, but is not limited to, information concerning the regimen whenadministered according to the methods of the present invention that isdesigned to enable a medical professional to answer costumer questions.

A “medical professional,” includes, for example, a physician, physicianassistant, nurse, nurse practitioner, pharmacist and customer servicerepresentative.

Having generally described this invention, a further understanding canbe obtained by reference to the examples provided herein. These examplesare for purposes of illustration only and are not intended to belimiting.

EXAMPLE 1

Isolation of Microorganisms

Samples were collected from intertidal habitats during low tide,including bays and estuaries along the West Coast of North America(California, Oregon, and Washington) and Hawaii. Water, sediment, livingplant material, and decaying plant/animal debris were placed intosterile 50 ml tubes. Portions of each sample along with the water werespread onto solid agar plates of isolation media. Isolation mediaconsisted of: 500 ml of artificial seawater, 500 ml of distilled water,1 g of glucose, 1 g of glycerol, 13 g of agar, 1 g of glutamate, 0.5 gof yeast extract, 0.5 g casein hydrolysate, 1 ml of a vitamin solution(100 mg/L thiamine, 0.5 mg/L biotin, 0.5 mg B₁₂), 1 ml of a tracemineral solution (PII metals, containing per liter: 6.0 g FeCl₃6H₂O,6.84 g H₃BO₃, 0.86 g MnCl₂4H₂O, 0.06 g ZnCl₂, 0.026 CoCl₂6H₂O, 0.052 gNiSO₄H₂O, 0.002 g CuSO₄5H₂O and 0.005 g Na₂MoO₄2H₂O), and 500 mg each ofpenicillin G and streptomycin sulfate. The agar plates were incubated inthe dark at 20-25° C. After 2-4 days the agar plates were examined undermagnification, and colonies of cells were picked with a steriletoothpick and restreaked onto a fresh plate of media. Cells wererepeatedly streaked onto fresh media until contaminated organisms wereremoved. Two of the isolated microorganisms were deposited under ATCCAccession Nos. PTA-10212 and PTA-10208.

Taxonomic Characteristics of the Isolated Microorganism Deposited UnderATCC Accession No. PTA-10212

Cultures of the isolated microorganism deposited under ATCC AccessionNo. PTA-10212 (“PTA-10212”) appeared as white, wet, smeared colonieswithout visible isolated sori.

PTA-10212 was grown on solid and liquid FFM, solid KMV, KMV slush (1%),KMV broth, and MH broth to further examine growth characteristics.PTA-10212 was observed to grow rapidly on KMV and MH. See, e.g., PorterD., 1989. Phylum Labyrinthulomycota. In Margulis, L., Corliss, J. O.,Melkonian, M., Chapman, D. J. (Eds.) Handbook of Protoctista, Jones andBartlett, Boston, pp. 388-398 (KMV); Honda et al., Mycol. Res.102:439-448 (1998) (MH); and U.S. Pat. No. 5,130,242 (FFM), each ofwhich is incorporated herein by reference in its entirety.

The following observations were made after growth of PTA-10212 overseveral days on solid FFM media, after 72 hours growth in KMV medias,and MH broth. Sporangia were not clumped in/on any media and were verysmall (5-10 μm). PTA-10212 did not demonstrate the copious tetradscharacteristic of Schizochytrium cleavage patterns. Amoeboid cellsappeared about 24 hours after transfer to fresh solid media. Theseamoeboid cells were gone after a few days and were not evident in liquidor slush media. Unlike Aurantiochytrium, described by Yokoyama, R. etal., Mycoscience 48(6): 329-341 (2007), as having the appearance of“small sandgrains on the bottom of the flask” when grown in liquidmedia, PTA-10212 did not settle at the bottom of the flask but wassuspended in both KMV and MH liquid media. The sporangia were not asdense as typical of Schizochytrium or Oligochytrium, which also haverobust ectoplasmic networks that were absent from PTA-10212. While mostspecies undergo vegetative cleavage of small sporangia or assimilativecells by the division of a larger sporangium over several hours,PTA-10212 formed dumbbell-shaped elongated assimilative cells, whichthen formed a thin isthmus that pulled apart as the ends of the dumbbellseparated. The resulting cells appeared to be small assimilative cells.Direct transformation of an amoeboid cell into the dumbbell shapedassimilative cell was not observed. Typical biflagellate zoospores wereobserved swimming but were relatively rare. PTA-10212 was non-prolific,dividing by vegetative cleavage. Direct release of zoospores was notobserved, although zoospores were observed swimming Vegetative cellswere very small (2 μm to 5 μm).

PTA-10212 was further examined using the flow-through technique, inwhich microscopic slides were prepared by suspending a small portion ofan agar-grown colony in a drop of half-strength sea water. With thistechnique, primary sporangia were observed to be globose andapproximately 10 μm in diameter. Walls were very thin and remnants werenot observed when binary division of the protoplast was initiated.Repeated binary division produced 8-16 smaller (4-5 μm in diameter)secondary sporangia. The secondary sporangia remained quiescent forseveral hours before again releasing an amorphous protoplast. Theamorphous protoplast divided by pinching and pulling, initiallyproducing typical dumbbell-shaped intermediate stages and finallyresulting in 4-8 small globose bodies 2.5-2.8 μm in diameter. The latterrested for several minutes up to 1-2 hours, then changed shape(elongated) and turned into biflagellate zoospores, 2.3-2.5×3.7-3.9 μm.Zoospores were abundant and could be precisely measured when they cameto rest. Zoospores then rounded off and started a new cycle ofdevelopment. The zoospores were larger than Sicyoidochytrium minutum andsmaller than Ulkenia visurgensis.

PTA-10212 was further characterized based on the similarity of its 18srRNA gene to that of known species. Genomic DNA was prepared fromPTA-10212 by standard procedures. See, for example, Sambrook J. andRussell D. 2001. Molecular cloning: A laboratory manual, 3rd edition.Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. Briefly:(1) 500 μL of cells were centrifuged from mid-log culture. The cellswere re-centrifuged, and all traces of liquid were removed from the cellpellet with a small-bore tip; (2) pellets were resuspended with 200 μLlysis buffer (20 mM Tris pH 8.0, 125 μg/mL Proteinase K, 50 mM NaCl, 10mM EDTA pH 8.0, 0.5% SDS); (3) cells were lysed at 50° C. for 1 hour;(4) the lysis mixture was pipetted into phase-lock gel (PLG-Eppendorf) 2mL tubes; (5) equal volume of P:C:I was added and allowed to mix for 1.5hours; (6) the tubes were centrifuged at 12,000×g for 5 minutes; (7) theaqueous phase was removed from above the gel within the PLG tube and anequal volume of chloroform was added to the aqueous phase, and mixed for30 minutes; (8) the tubes were centrifuged at 14,000×g for approximately5 minutes; (9) the top layer (aqueous phase) was pipetted away from thechloroform, and placed in a new tube; (10) 0.1 volume of 3 M NaOAC wasadded and mixed (inverted several times); (11) 2 volumes of 100% EtOHwere added and mixed (inverted several times) with genomic DNAprecipitant forming at this stage; (12) the tubes were centrifuged at 4°C. in a microcentrifuge at 14,000×g for approximately 15 minutes; (13)the liquid was gently poured off with genomic DNA remaining at thebottom of the tube; (14) the pellet was washed with 0.5 mL 70% EtOH;(15) the tubes were centrifuged at 4° C. in a microcentrifuge at14,000×g for approximately 5 minutes; (16) the EtOH was gently pouredoff and the genomic DNA pellet was dried; and (17) a suitable volume ofH₂O and RNase was added directly to the genomic DNA pellet. The PCRamplification of the 18s rRNA gene was carried out with primerspreviously described (Honda et. al., J. Euk. Micro. 46(6): 637-647(1999). The PCR conditions with chromosomal DNA template were asfollows: 0.2 μM dNTPs, 0.1 μM each primer, 8% DMSO, 200 ng chromosomalDNA, 2.5 U Herculase® II Fusion DNA Polymerase (Stratagene), andHerculase® buffer (Stratagene) in a 50 μL total volume. The PCR Protocolincluded the following steps: (1) 95° C. for 2 minutes; (2) 95° C. for35 seconds; (3) 55° C. for 35 seconds; (4) 72° C. for 1 minute and 30seconds; (5) repeat steps 2-4 for 30 cycles; (6) 72° C. for 5 minutes;and (7) hold at 4° C.

PCR amplification yielded a distinct DNA product with the expected sizeusing chromosomal template described above. The PCR product was clonedinto the vector pJET1.2/blunt (Fermentas) according to themanufacturer's instructions, and the insert sequence was determinedusing supplied standard primers.

Phylogenetic analysis places PTA-10212 within the lineage that includesThraustochytrium pachydermum and Thraustochytrium aggregatum withmoderate support. The sporangia of T. pachydermum have very thick cellwalls. T. aggregatum forms clearly visible clumps of sori that areopaque. PTA-10212 shows neither of these characteristics. The presenceof many amoeboid cells has been described in other taxa, such asUlkenia, T. gaertnerium, A. limiacinum, and S. mangrovei; however, thedescriptions associated with those taxa differ from the observedcharacteristics of the isolate. Moreover, PTA-10212 did not showphylogenetic affinity towards any of these taxa.

Table 3 shows a comparison of the 18s rRNA sequence from themicroorganism deposited under ATCC Accession No. PTA-10212 to DNAsequences in the National Center for Biotechnology Information (NCBI)electronic database. The percent identity was determined using twodifferent calculations. “Calculation #1” takes into consideration any“gaps” that occur in the sequences, either from non-homologous regionsor partial sequence (AlignX-VectorNTI default settings). “Calculation#2” does not include calculated penalties for gaps (AlignX-VectorNTI“IDENTITY” matrix setting).

TABLE 3 Comparison of 18s rRNA Sequences % Identity % IdentityThraustochytrids Calculation #1 Calculation #2 Thraustochytriumpachydermum 85% 93% Thraustochytrium aggregatum (p) 83% 92%Thraustochytrium gaertnerium 82% 92% Ulkenia visurgensis 82% 92%Schizochytrium sp. PTA-9695 80% 92% Schizochytrium mangrovei 80% 91%Schizochytrium sp. ATCC 20888 80% 90% Aurantiochytrium limiacinum 79%90% (p): indicates partial sequence

As shown in Table 3, it was found that, in terms of % identity, the 18srRNA gene sequence (SEQ ID NO:1) from the microorganism deposited underATCC Accession No. PTA-10212 is related, though not identical, to 18srRNA gene sequences available in the NCBI database. It is generallyrecognized that organisms can have closely related 18s rRNA genesequences while belonging to a different genus or species.

Based on the above characterization, the isolated microorganismdeposited under ATCC Accession No. PTA-10212 is believed to represent anew Thraustochytrium species and is therefore also designated asThraustochytrium sp. ATCC PTA-10212.

Taxonomic Characteristics of the Isolated Microorganism Deposited UnderATCC Accession No. PTA-10208

The microorganism deposited under ATCC Accession No. PTA-10208(“PTA-10208”) was identified as a sub-isolate (an individual cellisolated from a culture and maintained as a new separate and distinctculture) of the microorganism deposited under ATCC Accession No.PTA-9695 (“PTA-9695”), described in U.S. application Ser. No. 12/407,687and PCT/US2009/001720, each of which is incorporated herein by referencein its entirety.

PTA-10208 shares taxonomic characteristics with PTA-9695. PTA-9695 wasfound to have biflagellate zoospores at discharge that swim activelyaway from the mature sporangium, wall remnants of which were clearlyvisible (in phase contrast) after spore release. PTA-9695 sporangiameasured 12.5 μm to 25 μm in diameter, and zoospores were 2.5 μm to 2.8μm×4.5 μm to 4.8 μm in size. There were 8 to 24 spores per individualPTA-9695 sporangium. Settled PTA-9695 zoospores enlarged and rapidlyunderwent binary divisions leading to tetrads, octads, and finally toclusters of sporangia. Tetrad formation commenced at a very early stageprior to maturity of the sporangia. These characteristics are inagreement with the genus Schizochytrium. In terms of % identity, thePTA-9695 18s rRNA gene sequence (SEQ ID NO:2), which is shared byPTA-10208, was found to be closely related, though not identical, to the18s rRNA gene sequence of T. aggregatum provided in Honda, D. et al., J.Euk. Micro. 46(6): 637-647 (1999). The 18s rRNA sequence published forThraustochytrium aggregatum is a partial sequence, with an approximately71 DNA nucleotide gap in the middle of the sequence. PTA-9695 isbelieved to represent a new Schizochytrium species. As such, thesub-isolate PTA-10208 is also designated as Schizochytrium sp. ATCCPTA-10208.

EXAMPLE 2

Growth Characteristics of the Isolated Microorganism Deposited UnderATCC Accession No. PTA-10212

The isolated microorganism deposited under ATCC Accession No. PTA-10212was examined for growth characteristics in individual fermentation runs,as described below. Typical media and cultivation conditions are shownin Table 1.

In carbon (glycerol) and nitrogen-fed cultures with 1000 ppm Cl⁻ at22.5° C. with 20% dissolved oxygen at pH 7.3, PTA-10212 produced a drycell weight of 26.2 g/L after 138 hours of culture in a 10 L fermentorvolume. The lipid yield was 7.9 g/L; the omega-3 yield was 5.3 g/L; theEPA yield was 3.3 g/L; and the DHA yield was 1.8 g/L. The fatty acidcontent was 30.3% by weight; the EPA content was 41.4% of fatty acidmethyl esters (FAME); and the DHA content was 26.2% of FAME. The lipidproductivity was 1.38 g/L/day, and the omega-3 productivity was 0.92g/L/day under these conditions, with 0.57 g/L/day EPA productivity and0.31 g/L/day DHA productivity.

In carbon (glycerol) and nitrogen-fed cultures with 1000 ppm Cl⁻ at22.5° C. with 20% dissolved oxygen at pH 7.3, PTA-10212 produced a drycell weight of 38.4 g/L after 189 hours of culture in a 10 L fermentorvolume. The lipid yield was 18 g/L; the omega-3 yield was 12 g/L; theEPA yield was 5 g/L; and the DHA yield was 6.8 g/L. The fatty acidcontent was 45% by weight; the EPA content was 27.8% of FAME; and theDHA content was 37.9% of FAME. The lipid productivity was 2.3 g/L/day,and the omega-3 productivity was 1.5 g/L/day under these conditions,with 0.63 g/L/day EPA productivity and 0.86 g/L/day DHA productivity.

In carbon (glycerol) and nitrogen-fed cultures with 1000 ppm Cl⁻ at22.5° C. with 20% dissolved oxygen at pH 6.8-7.7, PTA-10212 produced adry cell weight of 13 g/L after 189 hours of culture in a 10 L fermentorvolume. The lipid yield was 5.6 g/L; the omega-3 yield was 3.5 g/L; theEPA yield was 1.55 g/L; and the DHA yield was 1.9 g/L. The fatty acidcontent was 38% by weight; the EPA content was 29.5% of FAME; and theDHA content was 36% of FAME. The lipid productivity was 0.67 g/L/day,and the omega-3 productivity was 0.4 g/L/day under these conditions,with 0.20 g/L/day EPA productivity and 0.24 g/L/day DHA productivity.

In carbon (glycerol) and nitrogen-fed cultures with 1000 ppm Cl⁻ at22.5-28.5° C. with 20% dissolved oxygen at pH 6.6-7.2, PTA-10212produced a dry cell weight of 36.7 g/L-48.7 g/L after 191 hours ofculture in a 10 L fermentor volume. The lipid yield was 15.2 g/L-25.3g/L; the omega-3 yield was 9.3 g/L-13.8 g/L; the EPA yield was 2.5g/L-3.3 g/L; and the DHA yield was 5.8 g/L-11 g/L. The fatty acidcontent was 42.4%-53% by weight; the EPA content was 9.8%-22% of FAME;and the DHA content was 38.1%-43.6% of FAME. The lipid productivity was1.9 g/L/day-3.2 g/L/day, and the omega-3 productivity was 1.2g/L/day-1.7 g/L/day under these conditions, with 0.31 g/L/day-0.41g/L/day EPA productivity and 0.72 g/L/day-1.4 g/L/day DHA productivity.

Growth Characteristics of the Isolated Microorganism Deposited UnderATCC Accession No. PTA-10208

The isolated microorganism deposited under ATCC Accession No. PTA-10208was examined for growth characteristics in individual fermentation runs,as described below. Typical media and cultivation conditions are shownin Table 2.

In carbon (glucose) and nitrogen-fed cultures with 1000 ppm Cl⁻ at 22.5°C. at pH 7.0 with 20% dissolved oxygen during the nitrogen feed and 10%dissolved oxygen thereafter, PTA-10208 produced a dry cell weight of 95g/L after 200 hours of culture in a 10 L fermentor volume. The lipidyield was 53.7 g/L; the omega-3 yield was 37 g/L; the EPA yield was 14.3g/L; and the DHA yield was 21 g/L. The fatty acid content was 57% byweight; the EPA content was 27.7% of FAME; and the DHA content was 39.1%of FAME. The lipid productivity was 6.4 g/L/day, and the omega-3productivity was 4.4 g/L/day under these conditions, with 1.7 g/L/dayEPA productivity and 2.5 g/L/day DHA productivity.

In carbon (glucose) and nitrogen-fed cultures with 1000 ppm Cl⁻ at 22.5°C. at pH 7.5 with 20% dissolved oxygen during the nitrogen feed and 10%dissolved oxygen thereafter, PTA-10208 produced a dry cell weight of 56g/L after 139 hours of culture in a 10 L fermentor volume. The lipidyield was 53 g/L; the omega-3 yield was 34 g/L; the EPA yield was 11.5g/L; and the DHA yield was 22 g/L. The fatty acid content was 58% byweight; the EPA content was 21.7% of FAME; and the DHA content was 41.7%of FAME. The lipid productivity was 9.2 g/L/day, and the omega-3productivity was 5.9 g/L/day under these conditions, with 2 g/L/day EPAproductivity and 3.8 g/L/day DHA productivity.

In carbon (glucose) and nitrogen-fed cultures with 1000 ppm Cl⁻ at 22.5°C. at pH 7.0 with 20% dissolved oxygen during the nitrogen feed and 10%dissolved oxygen thereafter, PTA-10208 produced a dry cell weight of93.8 g/L after 167 hours of culture in a 2000 L fermentor volume. Thelipid yield was 47.2 g/L; the omega-3 yield was 33.1 g/L; the EPA yieldwas 10.5 g/L; and the DHA yield was 20.4 g/L. The fatty acid content was50.6% by weight; the EPA content was 23% of FAME; and the DHA contentwas 42.6% of FAME. The lipid productivity was 6.8 g/L/day, and theomega-3 productivity was 4.7 g/L/day under these conditions, with 1.5g/L/day EPA productivity and 2.9 g/L/day DHA productivity.

In carbon (glucose) and nitrogen-fed cultures with 1000 ppm Cl⁻ at 22.5°C. at pH 7.0 with 20% dissolved oxygen during the nitrogen feed and 10%dissolved oxygen thereafter, PTA-10208 produced a dry cell weight of 105g/L after 168 hours of culture in a 2000 L fermentor volume. The lipidyield was 46.4 g/L; the omega-3 yield was 33 g/L; the EPA yield was 10.7g/L; and the DHA yield was 20.3 g/L. The fatty acid content was 43.9% byweight; the EPA content was 24% of FAME; and the DHA content was 43.7%of FAME. The lipid productivity was 6.6 g/L/day, and the omega-3productivity was 4.7 g/L/day under these conditions, with 1.5 g/L/dayEPA productivity and 2.9 g/L/day DHA productivity.

In carbon (glucose) and nitrogen-fed cultures with 1000 ppm Cl⁻ at 22.5°C. at pH 7.0 with 20% dissolved oxygen during the nitrogen feed and 10%dissolved oxygen thereafter, PTA-10208 produced a dry cell weight of64.8 g/L after 168 hours of culture in a 2000 L fermentor volume. Thelipid yield was 38.7 g/L; the omega-3 yield was 29.9 g/L; the EPA yieldwas 8.5 g/L; and the DHA yield was 16.7 g/L. The fatty acid content was59.6% by weight; the EPA content was 23% of FAME; and the DHA contentwas 42.3% of FAME. The lipid productivity was 5.53 g/L/day, and theomega-3 productivity was 3.8 g/L/day under these conditions, with 1.2g/L/day EPA productivity and 2.3 g/L/day DHA productivity.

EXAMPLE 3

Fatty Acid Profiles of Microorganism Strains ATCC PTA-10208 andPTA-10212

Four samples of biomass (PTA-10208 Sample #1; PTA-10208 Sample #2;PTA-10212 Sample #1; and PTA-10212 Sample #2) were analyzed for totalcrude oil content by solvent extraction, lipid classes were determinedby high performance liquid chromatography/evaporative light scatteringdetection (HPLC/ELSD), triacylglycerol (TAG) were analyzed by HPLC/massspectrometry (HPLC/MS), and fatty acid (FA) profiles were determined bygas chromatography with flame ionization detection (GC-FID). The crudelipid content of each freeze dried biomass was determined using solventgrinding with hexane and compared to the sum of FAME (mg/g) generated bydirect transesterification, and the resultant fatty acid methyl esters(FAME) were quantified by GC/FID analysis. Fatty acids in the extractedcrude lipid were also quantified by transesterification and quantifiedusing GC/FID analysis of the resultant FAME. The weight percent of allneutral lipids (NL) and free fatty acids (FFA) were determined in theextracted crude lipid using normal phase HPLC with ELSD and atmosphericpressure chemical ionization-MS (APCI-MS) identification. The methodseparates and quantifies sterol esters (SE), TAG, free fatty acids(FFA), 1,3-diacylglycerols (1,3-DAG), sterols, 1,2-diacylglycerols(1,2-DAG), and monoacylglycerols (MAG). Results are shown in Tables 4and 5, below.

TAG and phospholipids (PL) were isolated from the crude oils extractedfrom the four samples of biomass (PTA-10208 Sample #1; PTA-10208 Sample#2; PTA-10212 Sample #1; and PTA-10212 Sample #2). TAG was isolatedusing low pressure flash chromatography and PL was isolated using solidphase extraction (SPE). The identity of each isolated fraction wasconfirmed by thin layer chromatography (TLC). The fatty acid profiles ofthe isolated TAG and PL fractions were determined following directtransesterification using GC-FID as FAME. Results are shown in Tables 6and 7, below.

The total crude oil content and fatty acid profiles of isolated lipidclasses were also determined for two additional samples of biomass frommicroorganism strain ATCC PTA-10212 (PTA-10212 Sample #3 and PTA-10212Sample #4). Crude oil was obtained from each sample by hexaneextraction, and individual lipid classes were isolated using lowpressure flash chromatography. The fatty acid profiles of the biomass,crude oil, and isolated fractions were determined using GC-FID as FAME.Results are shown in Tables 8-11, below.

Individual lipid classes were isolated from a sample of crude oil frommicroorganism strain ATCC PTA-10212 (PTA-10212 Sample #5) previouslyextracted using the FRIOLEX® process, and the fatty acid profiles ofeach class were determined using GC-FID as FAME. Results are shown inTables 12 and 13, below.

Individual lipid classes were isolated from a sample of crude oil frommicroorganism strain ATCC PTA-10208 (PTA-10208 Sample #3) using normalHPLC with ELSD and APCI-MS identification.

Experimental Procedures

Crude Oil Extraction—Crude oil was extracted from samples offreeze-dried biomass using solvent grinding. For example, approximately3 grams of biomass was weighed into a Swedish tube. Three ball bearingsand 30 mL of hexane were added to the Swedish tube, which was sealedwith a neoprene stopper and placed in a shaker for 2 hours. Theresultant slurry was filtered using a Buchner funnel and Whatman filterpaper. The filtered liquid was collected, the solvent removed undervacuum, and the amount of remaining crude lipid determinedgravimetrically.

Fatty Acid Analysis—The samples of biomass, extracted crude lipid, andisolated lipid classes were analyzed for fatty acid composition as FAME.Briefly, freeze-dried biomass and isolated lipid classes were weigheddirectly into a screw cap test tubes, while samples of the crude oilwere dissolved in hexane to give a concentration of approximately 2mg/mL. Toluene, containing internal standard, and 1.5 N HCl in methanolwas added to each tube. The tubes were vortexed, then capped and heatedto 100° C. for 2 hours. The tubes were allowed to cool, and saturatedNaCl in water was added. The tubes were vortexed again and centrifugedto allow the layers to separate. A portion of the organic layer was thenplaced in a GC vial and analyzed by GC-FID. FAME was quantified using a3-point calibration curve generated using Nu-Check-Prep GLC ReferenceStandard (NuCheck, Elysian, Minn.). Fatty acids present in the extractwere expressed as mg/g and as a weight percent. Fat content in thesamples was estimated assuming equal response to the internal standardwhen analyzed by GC-FID.

HPLC/ELSD/MS Method - Instrument Agilent 1100 HPLC, Alltech 3300 ELSD,Agilent 1100 MSD Column Phenomenex Luna Silica, 250 × 4.6 mm, 5 μmparticle size w/Guard Column Mobile Phase A - 99.5% Hexanes (Omnisolv)0.4% Isopropyl alcohol (Omnisolv) 0.1% Acetic Acid B - 99.9% Ethanol(Omnisolv, 95:5 Ethanol:IPA) 0.1% Acetic Acid Gradient Time, min. % A %B 0 100 0 5 100 0 15 85 10 20 0 100 25 0 100 26 100 0 35 100 0 ColumnTemp. 30° C. Flow Rate 1.5 mL/min Injection Volume 5 μL ELSD DetectionTemperature 35° C., Gas flow 1.2 L/min MSD Mass Range 200-1200,Fragmentor 225 V Drying Gas Temperature 350° C. Vaporizer Temperature325° C. Capillary Voltage 3500 V Corona Current 10 μA

Solid Phase Extraction—PL fractions were separated from the crude lipidby solid phase extraction (SPE) using 2 g aminopropyl cartridges(Biotage, Uppsala, Sweden) placed in a Vac Elut apparatus (Varian Inc,Palo Alto, USA). The cartridge was conditioned with 15 mL of hexane, and−60 mg of each sample was dissolved in 1 mL CHCl₃ and applied to thecartridge. The column was washed with 15 mL of 2:1 CHCl₃:isopropylalcohol to elute all the neutral lipids, which was discarded. The fattyacids were then eluted with 15 mL of 2% acetic acid (HOAc) in ether,which was discarded. The PL portion was eluted with 15 mL of 6:1Methanol:Chloroform, which was collected, dried under nitrogen, andweighed.

Flash Chromatography—Flash chromatography was used to separate the lipidclasses present in the crude oil. Approximately 200 mg of crude oildissolved in hexane was injected onto the head of the column. Thechromatography system utilized Silica Gel 60 (EMD Chemical, Gibbstown,N.J.) with mobile phase composed of Petroleum Ether and Ethyl Acetate at5 mL/min (Tables 6-7) or 3 mL/min (Tables 8-13). A step gradient wasused to selectively elute each lipid class from the column. The mobilephase gradient started from 100% petroleum ether and finished with 50%ethyl acetate. Fractions were collected in 10 mL test tubes using aGilson FC 204 large-bed fraction collector (Gilson, Inc., Middleton,Wis.). Each tube was analyzed by thin layer chromatography (TLC) and thetubes containing individual lipid classes (as judged by single spots onTLC plate with expected retention factor (Rf)) were pooled, concentratedto dryness, and weighed. The total fraction content was then determinedgravimetrically.

TLC Analysis—Thin layer chromatography was conducted on silica gelplates. The plates were eluted using a solvent system consisting ofpetroleum ether: ethyl ether: acetic acid (80:20:1) and were visualizedusing iodine vapor. The Rf values of each spot were then compared withreported literature values for each lipid class.

Analysis of TAG and PL Fractions—The isolated TAG and PL fractions wereanalyzed for fatty acid composition as fatty acid methyl esters (FAME).The TAG fractions were dissolved in hexane to give a concentration ofapproximately 1-2 mg/mL. 1 mL aliquots of the solutions wereconcentrated to dryness under nitrogen. Toluene, containing internalstandard, and 1.5 N HCl in methanol was added to each tube. The tubeswere vortexed, then capped and heated to 100° C. for 2 hours. Internalstandard and HCl methanol were added directly to the tubes containingthe PL fraction and heated. The tubes were allowed to cool, andsaturated NaCl in water was added. The tubes were vortexed again andcentrifuged to allow the layers to separate. A portion of the organiclayer was then placed in a GC vial and analyzed by GC-FID. FAMEs werequantified using a 3-point calibration curve generated usingNu-Check-Prep GLC 502B Reference Standard (NuCheck, Elysian, Minn.).Fatty acids present in the extract were expressed as mg/g and as a % ofFAME.

Results

PTA-10208 Sample #1

The fatty acid profile of the biomass and extracted crude lipid forPTA-10208 Sample #1 was determined using GC/FID. Fatty acids in thebiomass were transesterified in situ by weighing 28.6 mg of biomassdirectly into a FAME tube, while a sample of the extracted crude lipidwas prepared by weighing 55.0 mg of crude lipid into a 50 mL volumetricflask and transferring 1 ml to a separate FAME tube. The estimated crudelipid content of the biomass was determined to be 53.2% (as SUM of FAME)using GC with FID detection, while 52.0% (wt/wt) lipid was extractedfrom the dry biomass, giving a 97.8% recovery of total lipid. The crudelipid was determined to be 91.9% fatty acids (as SUM of FAME) usingGC/FID. The major fatty acids contained in the crude lipid were C16:0(182.5 mg/g), C20:5 n-3 (186.8 mg/g), and C22:6 n-3 (423.1 mg/g).

The lipid class profile of the extracted crude lipid was determined byweighing 55.0 mg of crude lipid into a 50 mL volumetric flask andtransferring an aliquot into an HPLC vial for HPLC/ELSD/MS analysis.According to the HPLC/ELSD/MS analysis, the crude lipid contained 0.2%sterol esters (SE), 95.1% TAG, 0.4% sterols, and 0.5% 1,2-diacylglycerol(DAG). 5% of the TAG fraction included a peak that eluted directly afterthe TAG peak, but did not give a recognizable mass spectrum.

Isolated TAG from this sample as determined by flash chromatography madeup approximately 92.4% of the crude oil. PL was not detected by weightor TLC after SPE isolation. The major fatty acids (>50 mg/g) containedin the TAG were C16:0 (189 mg/g), C20:5 n-3 (197 mg/g), and C22:6 n-3(441 mg/g).

PTA-10208 Sample #2

The fatty acid profile of the biomass and extracted crude lipid forPTA-10208 Sample #2 was determined using GC/FID. Fatty acids in thebiomass were transesterified in situ by weighing 32.0 mg of biomassdirectly into a FAME tube, while a sample of the extracted crude lipidwas prepared by weighing 60.1 mg of crude lipid into a 50 mL volumetricflask and transferring 1 ml to a separate FAME tube. The estimated crudelipid content of the biomass was determined to be 52.4% (as SUM of FAME)using GC with FID detection, while 48.0% (wt/wt) lipid was extractedfrom the dry biomass, giving a 91.7% recovery of total lipid. The crudelipid was determined to be 95.3% fatty acids (as SUM of FAME) usingGC/FID. The major fatty acids contained in the crude lipid were C16:0(217.5 mg/g), C20:5 n-3 (169.3 mg/g), and C22:6 n-3 (444.1 mg/g).

The lipid class profile of the extracted crude lipid was determined byweighing 60.1 mg of crude lipid into a 50 mL volumetric flask andtransferring an aliquot into an HPLC vial for HPLC/ELSD/MS analysis.According to the HPLC/ELSD/MS analysis, the crude lipid contained 0.2%SE, 95.7% TAG, 0.3% sterols, and 0.7% 1,2-DAG. 5.1% of the TAG fractionincluded a peak that eluted directly after the TAG peak, but did notgive a recognizable mass spectrum.

Isolated TAG from this sample made up approximately 93.9% of the crudeoil. PL was not detected by weight or TLC after SPE isolation. The majorfatty acids (>50 mg/g) contained in the TAG were C16:0 (218 mg/g), C20:5n-3 (167 mg/g) and C22:6 n-3 (430 mg/g).

PTA-10208 Sample #3

A sample of crude oil from the microorganism deposited under ATCCAccession No. PTA-10208 (Sample PTA-10208 #3) was analyzed usingHPLC/ELSD/MS. A total of 98.38% of lipids were recovered, with thesterol ester (SE) fraction accounting for 0.32%, the TAG fractionaccounting for 96.13%, the 1,3-diacylglycerol (DAG) fraction accountingfor 0.22%, the 1,2-DAG fraction accounting for 0.78%, and the sterolfraction accounting for 0.93%.

PTA-10212 Sample #1

The fatty acid profile of the biomass and extracted crude lipid forPTA-10212 Sample #1 was determined using GC/FID. Fatty acids in thebiomass were transesterified in situ by weighing 27.0 mg of biomassdirectly into a FAME tube, while a sample of the extracted crude lipidwas prepared by weighing 52.5 mg of crude lipid into a 50 mL volumetricflask and transferring 1 ml to a separate FAME tube. The estimated crudelipid content of the biomass was determined to be 38.3% (as SUM of FAME)using GC with FID detection, while 36.3% (wt/wt) lipid was extractedfrom the dry biomass, giving a 94.6% recovery of total lipid. The crudelipid was determined to be 83.2% fatty acids (as SUM of FAME) usingGC/FID. The major fatty acids contained in the crude lipid were C16:0(328.5 mg/g), C20:5 n-3 (90.08 mg/g), and C22:6 n-3 (289.3 mg/g).

The lipid class profile of the extracted crude lipid was determined byweighing 52.5 mg of crude lipid into a 50 mL volumetric flask andtransferring an aliquot into an HPLC vial for HPLC/ELSD/MS analysis.According to the HPLC/ELSD/MS analysis, the crude lipid contained 0.2%SE, 64.2% TAG, 1.9% FFA, 2.8% 1,3-DAG, 1.4% sterols, 18.8% 1,2-DAG, and0.5% MAG. 3.4% of the TAG fraction included a peak that eluted directlyafter the TAG peak, but did not give a recognizable mass spectrum.

Isolated TAG from this sample made up approximately 49.8% of the crudeoil. Isolated PL made up approximately 8.1% of the crude oil. The majorfatty acids (>50 mg/g) contained in the TAG fraction are C16:0 (400mg/g), C20:5 n-3 (91 mg/g), and C22:6 n-3 (273 mg/g). The major fattyacids (>50 mg/g) contained in the PL fraction are C16:0 (98 mg/g), C20:5n-3 (33 mg/g), and C22:6 n-3 (227 mg/g).

PTA-10212 Sample #2

The fatty acid profile of the biomass and extracted crude lipidPTA-10212 Sample #2 was determined using GC/FID. Fatty acids in thebiomass were transesterified in situ by weighing 29.5 mg of biomassdirectly into a FAME tube, while a sample of the extracted crude lipidwas prepared by weighing 56.5 mg of crude lipid into a 50 mL volumetricflask and transferring 1 ml to a separate FAME tube. The estimated crudelipid content of the biomass was determined to be 40.0% (as SUM of FAME)using GC with FID detection, while 41.3% (wt/wt) lipid was extractedfrom the dry biomass, giving a 106.1% recovery of total lipid. The crudelipid was determined to be 82.8% fatty acids (as SUM of FAME) usingGC/FID. The major fatty acids contained in the crude lipid were C16:0(327.3 mg/g), C20:5 n-3 (92.5 mg/g), and C22:6 n-3 (277.6 mg/g).

The lipid class profile of the extracted crude lipid was determined byweighing 56.5 mg of crude lipid into a 50 mL volumetric flask andtransferring an aliquot into an HPLC vial for HPLC/ELSD/MS analysis.According to the HPLC/ELSD/MS analysis, the crude lipid contained 0.2%SE, 58.2% TAG, 2.3% FFA, 3.4% 1,3-DAG, 1.7% sterols, 23.4% 1,2-DAG, and0.6% MAG. 3.3% of the TAG fraction included a peak that eluted directlyafter the TAG peak, but did not give a recognizable mass spectrum.

Isolated TAG from this sample made up approximately 51.9% of the crudeoil. Isolated PL made up approximately 8.8% of the crude oil. The majorfatty acids (>50 mg/g) contained in the TAG fraction are C16:0 (402mg/g), C20:5 n-3 (92 mg/g), and C22:6 n-3 (245 mg/g). The major fattyacids (>50 mg/g) contained in the PL fraction are C16:0 (121 mg/g),C20:5 n-3 (48 mg/g), and C22:6 n-3 (246 mg/g).

TABLE 4 Fatty Acid Profiles of PTA-10208 and PTA-10212 Biomasses andExtracted Crude Lipids (mg/g) PTA-10208 PTA-10208 PTA-10208 PTA-10208PTA-10212 PTA-10212 PTA-10212 PTA-10212 Sample #1 Sample #1 Sample #2Sample #2 Sample #1 Sample #1 Sample #2 Sample #2 Biomass Crude LipidBiomass Crude Lipid Biomass Crude Lipid Biomass Crude Lipid FAME FAMEFAME FAME FAME FAME FAME FAME Fatty Acid (mg/g) (mg/g) (mg/g) (mg/g)(mg/g) (mg/g) (mg/g) (mg/g) C12:0 1.47 2.43 1.80 3.14 0.99 1.90 0.871.91 C14:0 11.62 20.12 16.72 31.03 5.51 12.91 5.97 13.69 C14:1 0.00 0.000.00 0.00 0.00 0.00 0.00 0.00 C15:0 2.43 3.75 3.60 6.22 9.13 20.42 9.3920.81 C16:0 105.04 182.47 117.72 217.49 145.87 328.45 147.87 327.27C16:1 0.00 0.00 0.06 0.01 6.26 14.53 7.46 16.89 C18:0 5.37 8.96 4.778.37 6.77 15.39 6.77 15.15 C18:1 n-9 0.00 3.26 0.00 3.09 0.03 4.04 0.085.87 C18:1 n-7 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C18:2 n-6 0.000.00 0.00 0.00 0.00 0.00 0.00 0.00 C20:0 1.48 1.79 1.40 1.85 1.60 3.091.67 3.20 C18:3 n-3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C20:1 n-90.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C18:4 n-3 0.91 1.61 1.10 2.002.28 2.56 2.21 2.64 C20:2 n-6 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00C20:3 n-6 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C22:0 0.10 0.00 0.080.00 0.30 0.12 0.35 0.24 C20:4 n-7 0.81 0.45 0.67 0.41 0.00 0.00 0.000.00 C20:4 n-6 7.22 12.23 6.84 12.18 1.19 2.26 1.31 2.32 C22:1 n-9 0.000.00 0.00 0.00 0.00 0.00 0.00 0.00 C20:4 n-5 0.63 0.52 0.00 0.46 0.000.00 0.00 0.00 C20:4 n-3 3.45 5.45 3.33 5.58 0.00 2.40 0.00 2.34 C20:3n-3 0.09 0.00 0.11 0.00 0.00 0.00 0.00 0.00 C20:5 n-3 107.31 186.8392.99 169.32 40.32 90.08 43.15 92.54 C22:4 n-9 0.00 0.00 0.00 0.00 0.000.00 0.00 0.00 C24:0 0.60 0.00 0.52 0.00 2.81 6.83 2.74 6.53 C24:1 n-91.55 3.26 0.85 2.04 0.43 1.34 0.42 1.24 C22:5 n-6 9.66 15.84 10.27 17.982.42 4.68 2.32 4.21 C22:5 n-3 20.44 35.13 9.92 17.50 2.41 4.94 2.69 5.23C22:6 n-3 246.98 423.10 245.96 444.08 139.58 289.34 137.35 277.57 Sum ofFAME 527.15 907.18 518.71 942.75 367.89 805.29 372.63 799.68

TABLE 5 Fatty Acid Profiles of PTA-10208 and PTA-10212 Biomasses andExtracted Crude Lipids (%) PTA-10208 PTA-10208 PTA-10208 PTA-10208PTA-10212 PTA-10212 PTA-10212 PTA-10212 Sample #1 Sample #1 Sample #2Sample #2 Sample #1 Sample #1 Sample #2 Sample #2 Biomass Crude LipidBiomass Crude Lipid Biomass Crude Lipid Biomass Crude Lipid Fatty Acid %FAME % FAME % FAME % FAME % FAME % FAME % FAME % FAME C12:0 0.28 0.270.35 0.33 0.27 0.24 0.23 0.24 C14:0 2.20 2.22 3.22 3.29 1.50 1.60 1.601.71 C14:1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C15:0 0.46 0.41 0.690.66 2.48 2.54 2.52 2.60 C16:0 19.93 20.11 22.70 23.07 39.65 40.79 39.6840.93 C16:1 0.00 0.00 0.01 0.00 1.70 1.80 2.00 2.11 C18:0 1.02 0.99 0.920.89 1.84 1.91 1.82 1.89 C18:1 n-9 0.00 0.36 0.00 0.33 0.01 0.50 0.020.73 C18:1 n-7 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C18:2 n-6 0.000.00 0.00 0.00 0.00 0.00 0.00 0.00 C20:0 0.28 0.20 0.27 0.20 0.43 0.380.45 0.40 C18:3 n-3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C20:1 n-90.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C18:4 n-3 0.17 0.18 0.21 0.210.62 0.32 0.59 0.33 C20:2 n-6 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00C20:3 n-6 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C22:0 0.02 0.00 0.010.00 0.08 0.02 0.09 0.03 C20:4 n-7 0.15 0.05 0.13 0.04 0.00 0.00 0.000.00 C20:4 n-6 1.37 1.35 1.32 1.29 0.32 0.28 0.35 0.29 C22:1 n-9 0.000.00 0.00 0.00 0.00 0.00 0.00 0.00 C20:4 n-5 0.12 0.06 0.00 0.05 0.000.00 0.00 0.00 C20:4 n-3 0.65 0.60 0.64 0.59 0.00 0.30 0.00 0.29 C20:3n-3 0.02 0.00 0.02 0.00 0.00 0.00 0.00 0.00 C20:5 n-3 20.36 20.59 17.9317.96 10.96 11.19 11.58 11.57 C22:4 n-9 0.00 0.00 0.00 0.00 0.00 0.000.00 0.00 C24:0 0.11 0.00 0.10 0.00 0.76 0.85 0.74 0.82 C24:1 n-9 0.290.36 0.16 0.22 0.12 0.17 0.11 0.16 C22:5 n-6 1.83 1.75 1.98 1.91 0.660.58 0.62 0.53 C22:5 n-3 3.88 3.87 1.91 1.86 0.65 0.61 0.72 0.65 C22:6n-3 46.85 46.64 47.42 47.10 37.94 35.93 36.86 34.71 Sum of 100 100 100100 100 100 100 100 FAME %

TABLE 6 Fatty Acid Profiles of PTA-10208 and PTA-10212 Isolated TAGPTA-10208 PTA-10208 PTA-10208 PTA-10208 PTA-10212 PTA-10212 PTA-10212PTA-10212 Sample #1 Sample #1 Sample #2 Sample #2 Sample #1 Sample #1Sample #2 Sample #2 FAME % FAME % FAME % FAME % Fatty Acid (mg/g) FAME(mg/g) FAME (mg/g) FAME (mg/g) FAME C12:0 2.57 0.27 3.35 0.36 0.00 0.000.00 0.00 C14:0 21.07 2.23 31.37 3.41 14.05 1.61 14.45 1.69 C14:1 0.000.00 0.00 0.00 0.00 0.00 0.00 0.00 C15:0 3.89 0.41 6.17 0.67 23.27 2.6623.14 2.71 C16:0 189.28 20.07 218.78 23.75 399.51 45.75 402.43 47.07C16:1 0.00 0.00 0.00 0.00 15.23 1.74 17.62 2.06 C18:0 9.21 0.98 8.070.88 22.70 2.60 23.10 2.70 C18:1 n-9 3.35 0.36 3.64 0.40 6.12 0.70 7.480.87 C18:1 n-7 0.00 0.00 0.00 0.00 <0.1 <0.1 <0.1 <0.1 C18:2 n-6 0.000.00 0.00 0.00 0.00 0.00 0.00 0.00 C20:0 1.86 0.20 1.55 0.17 4.76 0.555.32 0.62 C18:3 n-3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C20:1 n-90.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C18:4 n-3 1.64 0.17 2.00 0.222.25 0.26 2.24 0.26 C20:2 n-6 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00C20:3 n-6 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C22:0 0.00 0.00 0.000.00 0.55 0.06 0.89 0.10 Un-known 0.00 0.00 0.00 0.00 0.00 0.00 0.000.00 C20:4 n-7 0.39 0.04 0.05 0.01 0.00 0.00 0.00 0.00 C20:3 n-3 0.000.00 0.00 0.00 0.00 0.00 0.00 0.00 C20:4 n-6 12.79 1.36 11.82 1.28 2.330.27 2.25 0.26 C22:1 n-9 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C20:4n-5 0.39 0.04 0.07 0.01 0.00 0.00 0.00 0.00 C20:4 n-3 5.52 0.59 5.090.55 2.87 0.33 2.98 0.35 C20:5 n-3 197.14 20.90 166.68 18.10 91.17 10.4491.78 10.74 C24:0 0.00 0.00 0.00 0.00 6.93 0.79 7.36 0.86 C22:4 n-9 0.000.00 0.00 0.00 0.00 0.00 0.00 0.00 C24:1 n-9 1.08 0.11 <0.1 <0.1 0.000.00 0.00 0.00 C22:5 n-6 15.88 1.68 16.57 1.80 4.01 0.46 3.39 0.40 C22:5n-3 36.05 3.82 16.00 1.74 4.53 0.52 5.07 0.59 C22:6 n-3 440.99 46.76429.83 46.67 273.02 31.26 245.38 28.70 Sum of FAME 943.11 — 921.03 —873.31 — 854.89 — Total % — 100.00 — 100.00 — 100.00 — 100.00 FAME

TABLE 7 Fatty Acid Profiles of PTA-10212 Isolated PL PTA-10212 PTA-10212Sample #1 PTA-10212 Sample #2 PTA-10212 FAME Sample #1 FAME Sample #2Fatty Acid (mg/g) % FAME (mg/g) % FAME C12:0 0.00 0.00 0.00 0.00 C14:00.93 0.22 1.89 0.39 C14:1 0.00 0.00 0.00 0.00 C15:0 3.44 0.82 5.07 1.05C16:0 98.29 23.50 120.98 25.00 C16:1 1.15 0.27 3.07 0.63 C18:0 3.25 0.783.72 0.77 C18:1 n-9 1.12 0.27 0.95 0.20 C18:1 n-7 <0.1 <0.1 0.02 0.003C18:2 n-6 0.00 0.00 0.00 0.00 C20:0 <0.1 <0.1 <0.1 <0.1 C18:3 n-3 0.000.00 0.00 0.00 C20:1 n-9 0.00 0.00 0.00 0.00 C18:4 n-3 3.71 0.89 3.240.67 C20:2 n-6 0.00 0.00 0.00 0.00 C20:3 n-6 0.00 0.00 0.00 0.00 C22:00.00 0.00 0.00 0.00 Unknown 42.33 10.12 44.71 9.24 C20:4 n-7 0.00 0.000.00 0.00 C20:3 n-3 0.00 0.00 0.00 0.00 C20:4 n-6 0.84 0.20 1.54 0.32C22:1 n-9 0.00 0.00 0.00 0.00 C20:4 n-5 0.00 0.00 0.00 0.00 C20:4 n-3<0.1 <0.1 0.27 0.06 C20:5 n-3 33.39 7.98 47.91 9.90 C24:0 <0.1 <0.1 0.010.001 C22:4 n-9 0.00 0.00 0.00 0.00 C24:1 n-9 0.00 0.00 0.00 0.00 C22:5n-6 3.08 0.74 3.82 0.79 C22:5 n-3 <0.1 <0.1 0.66 0.14 C22:6 n-3 226.6854.20 246.09 50.85 Sum of FAME 418.21 — 483.94 — Total % FAME — 100 —100PTA-10212 Sample #3

The lipid content of the biomass for PTA-10212 Sample #3 was estimatedto be 34% as the sum of FAME, and the amount of crude oil obtained aftersolvent extraction was 37% by weight, giving a 109% recovery of fatpresent in the biomass. After fractionation using flash chromatography,approximately 46% of the crude oil was isolated as TAG, 28% was isolatedas DAG, The crude oil contained 309 mg/g DHA and 264 mg/g EPA. Theisolated TAG contained 341 mg/g DHA and 274 mg/g EPA. The isolated DAGfraction contained 262 mg/g DHA and 237 mg/g EPA. The total fatty acidprofiles of the biomass, extracted crude oil, and isolated fractions areshown below in Table 8 and Table 9 calculated as mg/g and % FAME,respectively.

TABLE 8 Fatty Acid Profiles of PTA-10212 Sample #3 Biomass and ExtractedCrude Lipid (mg/g) Biomass Crude Oil TAG DAG Wt. % NA 37.2% 46.0% 27.9%FAME FAME FAME FAME Fatty Acid (mg/g) (mg/g) (mg/g) (mg/g) C12:0 0.0 0.00.0 0.0 C14:0 3.6 10.3 11.5 9.4 C14:1 0.0 0.0 0.0 0.0 C15:0 4.1 10.6 9.86.6 C16:0 70.5 181.8 231.7 111.3 C16:1 6.7 19.1 18.7 17.1 C18:0 2.4 10.214.2 0.0 C18:1 n-9 0.0 6.7 0.0 0.0 C18:1 n-7 0.0 1.2 0.0 0.0 C18:2 n-60.0 1.8 0.0 0.0 C20:0 0.0 2.4 0.0 0.0 C18:3 n-3 0.0 0.0 0.0 0.0 C20:1n-9 0.0 0.3 0.0 1.7 C18:4 n-3 1.9 3.4 3.2 4.4 C20:2 n-6 0.0 0.0 0.0 0.0C20:3 n-6 0.0 0.0 0.0 0.0 C22:0 3.3 0.0 0.0 0.0 C20:4 n-7 0.0 2.1 1.50.0 C20:3 n-3 0.0 0.0 0.0 0.0 C20:4 n-6 6.8 17.9 21.4 13.8 C22:1 n-9 0.00.0 0.0 0.0 C20:4 n-5 0.0 1.3 1.3 0.0 C20:4 n-3 3.0 8.5 10.9 6.4 C20:5n-3 102.0 263.6 274.2 237.4 C24:0 0.0 1.7 3.9 0.0 C22:4 n-9 0.0 0.0 0.00.0 C24:1 n-9 0.0 0.0 4.2 0.0 C22:5 n-6 3.2 8.3 10.7 6.1 C22:5 n-3 3.810.4 15.1 6.6 C22:6 n-3 131.2 309.4 341.1 261.9 Sum of FAME 342.4 871.1973.2 682.6

TABLE 9 Fatty Acid Profiles of PTA-10212 Sample #3 Biomass and ExtractedCrude Lipid (%) Biomass Crude Oil TAG DAG Wt. % NA 37.2% 46.0% 27.9%FAME FAME FAME FAME Fatty Acid (mg/g) (mg/g) (mg/g) (mg/g) C12:0 0.0 0.00.0 0.0 C14:0 1.1 1.2 1.2 1.4 C14:1 0.0 0.0 0.0 0.0 C15:0 1.2 1.2 1.01.0 C16:0 20.6 20.9 23.8 16.3 C16:1 2.0 2.2 1.9 2.5 C18:0 0.7 1.2 1.50.0 C18:1 n-9 0.0 0.8 0.0 0.0 C18:1 n-7 0.0 0.1 0.0 0.0 C18:2 n-6 0.00.2 0.0 0.0 C20:0 0.0 0.3 0.0 0.0 C18:3 n-3 0.0 0.0 0.0 0.0 C20:1 n-90.0 0.0 0.0 0.2 C18:4 n-3 0.6 0.4 0.3 0.6 C20:2 n-6 0.0 0.0 0.0 0.0C20:3 n-6 0.0 0.0 0.0 0.0 C22:0 1.0 0.0 0.0 0.0 C20:4 n-7 0.0 0.2 0.20.0 C20:3 n-3 0.0 0.0 0.0 0.0 C20:4 n-6 2.0 2.1 2.2 2.0 C22:1 n-9 0.00.0 0.0 0.0 C20:4 n-5 0.0 0.1 0.1 0.0 C20:4 n-3 0.9 1.0 1.1 0.9 C20:5n-3 29.8 30.3 28.2 34.8 C24:0 0.0 0.2 0.4 0.0 C22:4 n-9 0.0 0.0 0.0 0.0C24:1 n-9 0.0 0.0 0.4 0.0 C22:5 n-6 0.9 1.0 1.1 0.9 C22:5 n-3 1.1 1.21.6 1.0 C22:6 n-3 38.3 35.5 35.1 38.4 Total % FAME 100.0 100.0 100.0100.0PTA-10212 Sample #4

PTA-10212 Sample #4 contained approximately 23% lipid determined as thesum of FAME, of which 107% was recovered using hexane extraction. Afterfractionation using flash chromatography, approximately 42% of the crudeoil was isolated as TAG, 18% was isolated as DAG. The crude oilcontained 275 mg/g DHA and 209 mg/g EPA. The isolated TAG contained 296mg/g DHA and 205 mg/g EPA. The isolated DAG fraction contained 245 mg/gDHA and 219 mg/g EPA. The total fatty acid profiles of the biomass,extracted crude oil, and isolated fractions are shown below in Table 10(mg/g) and Table 11 (% FAME).

TABLE 10 Fatty Acid Profiles of PTA-10212 Sample #4 Biomass andExtracted Crude Lipid (mg/g) Biomass Crude Oil TAG DAG Wt. % NA 24.7%42.2% 18.4% FAME FAME FAME FAME Fatty Acid (mg/g) (mg/g) (mg/g) (mg/g)C12:0 0.0 0.0 2.1 2.4 C14:0 2.0 8.3 9.8 9.6 C14:1 0.0 0.0 0.0 0.0 C15:04.8 16.8 0.4 0.9 C16:0 63.3 210.6 285.7 138.0 C16:1 1.6 6.7 7.4 7.5C18:0 2.8 12.2 19.9 4.6 C18:1 n-9 0.0 3.7 0.7 1.1 C18:1 n-7 0.0 0.0 0.31.2 C18:2 n-6 0.0 0.0 0.0 0.0 C20:0 0.0 3.3 6.0 1.5 C18:3 n-3 0.0 0.00.0 0.0 C20:1 n-9 0.0 0.0 0.7 1.2 C18:4 n-3 1.4 3.8 3.6 5.0 C20:2 n-60.0 0.0 0.0 0.0 C20:3 n-6 0.0 0.0 0.4 0.0 C22:0 1.5 0.0 1.9 0.0 C20:4n-7 0.0 0.0 0.9 0.6 C20:3 n-3 0.0 0.0 0.0 0.0 C20:4 n-6 2.5 10.1 13.010.3 C22:1 n-9 0.0 0.0 0.0 0.0 C20:4 n-5 0.0 0.0 0.8 0.7 C20:4 n-3 1.46.3 8.6 6.0 C20:5 n-3 57.6 209.1 205.4 219.0 C24:0 0.0 2.6 0.8 0.0 C22:4n-9 0.1 0.0 0.0 0.0 C24:1 n-9 0.0 0.0 1.1 0.5 C22:5 n-6 1.4 6.1 7.9 4.5C22:5 n-3 4.0 15.8 20.8 12.9 C22:6 n-3 87.7 275.0 296.4 244.8 Sum ofFAME 232.2 790.1 894.8 672.4

TABLE 11 Fatty Acid Profiles of PTA-10212 Sample #4 Biomass andExtracted Crude Lipid (%) Biomass Crude Oil TAG DAG Wt. % NA 24.7% 42.2%18.4% FAME FAME FAME FAME Fatty Acid (mg/g) (mg/g) (mg/g) (mg/g) C12:00.0 0.0 0.2 0.4 C14:0 0.9 1.0 1.1 1.4 C14:1 0.0 0.0 0.0 0.0 C15:0 2.12.1 0.0 0.1 C16:0 27.3 26.7 31.9 20.5 C16:1 0.7 0.8 0.8 1.1 C18:0 1.21.5 2.2 0.7 C18:1 n-9 0.0 0.5 0.1 0.2 C18:1 n-7 0.0 0.0 0.0 0.2 C18:2n-6 0.0 0.0 0.0 0.0 C20:0 0.0 0.4 0.7 0.2 C18:3 n-3 0.0 0.0 0.0 0.0C20:1 n-9 0.0 0.0 0.1 0.2 C18:4 n-3 0.6 0.5 0.4 0.7 C20:2 n-6 0.0 0.00.0 0.0 C20:3 n-6 0.0 0.0 0.0 0.0 C22:0 0.6 0.0 0.2 0.0 C20:4 n-7 0.00.0 0.1 0.1 C20:3 n-3 0.0 0.0 0.0 0.0 C20:4 n-6 1.1 1.3 1.5 1.5 C22:1n-9 0.0 0.0 0.0 0.0 C20:4 n-5 0.0 0.0 0.1 0.1 C20:4 n-3 0.6 0.8 1.0 0.9C20:5 n-3 24.8 26.5 23.0 32.6 C24:0 0.0 0.3 0.1 0.0 C22:4 n-9 0.0 0.00.0 0.0 C24:1 n-9 0.0 0.0 0.1 0.1 C22:5 n-6 0.6 0.8 0.9 0.7 C22:5 n-31.7 2.0 2.3 1.9 C22:6 n-3 37.8 34.8 33.1 36.4 Total % FAME 100.0 100.0100.0 100.0

PTA-10212 Sample #5

A sample of crude oil was extracted from a biomass of PTA-10212 usingthe FRIOLEX® process (GEA Westfalia Separator UK Ltd., Milton Keynes,England) to yield microbial oil PTA-10212 Sample #5. Individual lipidclasses were isolated from PTA-10212 Sample #5 using low pressure flashchromatography, and the weight percent of each class was determined. Thefatty acid profile of each class was determined using GC-FID.

Briefly, the sample was prepared by dissolving 240 mg of crude oil in600 μL of hexane and applying to the head of the column. Afterfractionation of the sample using flash chromatography, the combinedweights of all the fractions was 240 mg giving a 100% recovery. Thesterol ester fraction accounted for 0.9%, the TAG fraction accounted for42.6%, the free fatty acid (FFA) fraction accounted for 1.3%, the sterolfraction accounted for 2.2%, the DAG fraction accounted for 41.6%. Thetotal fatty acid profiles of the FRIOLEX® crude oil and isolatedfractions are shown below in Table 12 and Table 13 calculated as mg/gand % FAME, respectively.

TABLE 12 Fatty Acid Profiles of PTA-10212 Sample #5 Crude Oil (mg/g)Crude Oil TAG DAG Wt. % NA 42.6% 41.6% Fatty Acid FAME (mg/g) FAME(mg/g) FAME (mg/g) C12:0 0 0.7 1.0 C14:0 7.7 7.7 8.5 C14:1 0 0.0 0.0C15:0 10.3 11.7 9.3 C16:0 179.3 217.7 134.6 C16:1 18.1 16.3 25.9 C18:08.1 13.2 2.3 C18:1 n-9 4.7 8.4 0.7 C18:1 n-7 0 1.8 1.0 C18:2 n-6 1.8 3.30.7 C20:0 1.9 3.6 0.2 C18:3 n-3 0 0.0 0.0 C20:1 n-9 0 0.7 1.0 C18:4 n-33.1 2.8 3.8 C20:2 n-6 0 0.0 0.0 C20:3 n-6 0 0.6 0.4 C22:0 0 1.5 0.0C20:4 n-7 0 1.0 0.7 C20:3 n-3 0 0.0 0.0 C20:4 n-6 12.7 16.1 13.6 C22:1n-9 0 0.0 0.0 C20:4 n-5 0 1.5 0.8 C20:4 n-3 6.5 9.3 6.4 C20:5 n-3 213.3223.7 252.8 C24:0 2.3 4.4 0.6 C22:4 n-9 0 1.9 0.9 C24:1 n-9 0 0.0 0.0C22:5 n-6 7.9 9.5 8.3 C22:5 n-3 13 20.6 9.7 C22:6 n-3 305.6 327.4 353.8Sum of FAME 796.6 905.3 837.4

TABLE 13 Fatty Acid Profiles of PTA-10212 Sample #5 Crude Oil (%) CrudeOil TAG DAG Fatty Acid % FAME % FAME % FAME C12:0 0 0.1 0.1 C14:0 1 0.91.0 C14:1 0 0.0 0.0 C15:0 1.3 1.3 1.1 C16:0 22.5 24.0 16.1 C16:1 2.3 1.83.1 C18:0 1 1.5 0.3 C18:1 n-9 0.6 0.9 0.1 C18:1 n-7 0 0.2 0.1 C18:2 n-60.2 0.4 0.1 C20:0 0.2 0.4 0.0 C18:3 n-3 0 0.0 0.0 C20:1 n-9 0 0.1 0.1C18:4 n-3 0.4 0.3 0.5 C20:2 n-6 0 0.0 0.0 C20:3 n-6 0 0.1 0.0 C22:0 00.2 0.0 C20:4 n-7 0 0.1 0.1 C20:3 n-3 0 0.0 0.0 C20:4 n-6 1.6 1.8 1.6C22:1 n-9 0 0.0 0.0 C20:4 n-5 0 0.2 0.1 C20:4 n-3 0.8 1.0 0.8 C20:5 n-326.8 24.7 30.2 C24:0 0.3 0.5 0.1 C22:4 n-9 0 0.2 0.1 C24:1 n-9 0 0.0 0.0C22:5 n-6 1 1.1 1.0 C22:5 n-3 1.6 2.3 1.2 C22:6 n-3 38.4 36.2 42.3 Total% FAME 100 100 100

EXAMPLE 4

The relative amount and fatty acid composition of each TAG isomerpresent in the extracted crude lipid was determined for each of samplesPTA-10208 Sample #1, PTA-10208 Sample #2, PTA-10212 Sample #1, PTA-10212Sample #2, and PTA-10212 Sample #3, PTA-10212 Sample #4, and PTA-10212Sample #5 from Example 3 using non-aqueous reversed phase HPLCseparation and APCI-MS detection.

TAG Method - Instrument Agilent 1100 HPLC Agilent 1100 MSD Column(s) TwoPhenomenex Luna C18 (2), 150 × 4.6 mm, 3 μm particle size connected inseries Mobile Phase A - Acetonitrile B - IPA w/0.1% Ammonium AcetateGradient Time, min. % A % B 0 80 20 120 20 80 125 20 80 126 80 20 140 8020 Column Temp. 20° C. Flow Rate 0.5 mL/min Injection Volume 5 μL MSDMass Range 350-1150 Fragmentor 225 V Drying Gas Temperature 350° C.,Vaporizor Temperature 325° C. Capillary Voltage 3500 V Corona Current 10μA

PTA-10208 Sample #1

The crude lipid isolated from PTA-10208 Sample #1 was prepared for TAGanalysis prepared for TAG analysis by weighing 5.5 mg of oil into anHPLC vial and diluting with 1 mL of hexane.

TABLE 14 Identification of TAG Species in PTA-10208 Sample #1 RetentionArea Major (DAG) Time CN Identification Percent [M + H]⁺ [M + NH4]⁺Fragments 41.76 30 EPA/EPA/EPA 1.2 945.8 962.7 643.5 42.97 30EPA/EPA/DHA 5.4 971.7 988.8 643.4, 669.5 44.17 30 DHA/DHA/EPA 8.8 997.71014.7 669.5, 695.5 45.39 30 DHA/DHA/DHA 7.4 1023.7 1040.7 695.5 46.3232 DHA/EPA/ARA 1.1 973.8 990.8 645.4, 671.5 47.53 32 DHA/DPA/EPA 2.0999.8 1016.8 671.5, 697.5 48.88 32 DHA/EPA/ARA 2.6 973.8 990.7 645.4,671.5 DHA/DHA/DPA 1025.7 1042.8 697.5 50.23 32 DHA/DPA/EPA 1.8 999.81016.8 671.5, 697.4 51.47 32 DHA/DPA/DHA 1.5 1025.7 1042.8 695.5, 697.554.64 34 EPA/14:0/DHA 1.8 897.7 914.7 569.5, 595.5 55.80 34 DHA/DHA/14:02.2 923.6 940.8 595.5, 695.5 60.73 36 EPA/EPA/16:0 3.4 899.7 916.8597.5, 643.3 61.87 36 DHA/16:0/EPA 11.8 925.8 942.7 597.5, 623.5, 669.563.0 36 DHA/16:0/DHA 17.7 951.8 968.8 623.5, 695.5 65.47 38 EPA/EPA/18:02.3 927.7 944.8 625.5 66.58 38 DHA/DPA/16:0 2.9 953.8 970.8 623.5,625.5, 697.6 67.31 38 EPA/ARA/16:0 1.0 901.7 918.8 597.6, 599.5, 645.468.39 38 DHA/16:0/ARA 2.0 927.7 944.8 625.6 69.52 38 DHA/16:0/DPA 2.3953.8 970.8 623.5, 625.5 70.16 38 DHA/DHA/18:0 0.9 979.5 996.7 651.573.81 40 EPA/16:0/14:0 1.0 825.7 842.7 523.5, 569.5, 597.5 74.73 40DHA/14:0/16:0 1.5 851.7 868.7 523.4, 623.5 80.96 42 EPA/16:0/16:0 1.8853.6 870.8 551.5, 597.4 81.93 42 DHA/16:0/16:0 6.5 879.8 896.8 551.5,623.5 85.50 44 DPA/16:0/16:0 0.9 881.7 898.8 551.4, 625.4 88.92 4418:0/16:0/DHA 0.9 907.9 924.8 579.4, 651.5

PTA-10208 Sample #2

The crude lipid isolated from PTA-10208 Sample #2 was prepared for TAGanalysis prepared for TAG analysis by weighing 5.3 mg of oil into anHPLC vial and diluting with 1 mL of hexane.

TABLE 15 Identification of TAG Species in PTA-10208 Sample #2 RetentionArea Major (DAG) Time CN Identification Percent [M + H]⁺ [M + NH4]⁺Fragments 41.70 30 EPA/EPA/EPA 1.0 945.7 962.8 643.5 42.92 30EPA/EPA/DHA 4.3 971.7 988.8 643.5, 669.5 44.11 30 DHA/DHA/EPA 6.9 997.81014.8 669.5, 695.5 45.33 30 DHA/DHA/DHA 6.2 1023.8 1040.8 695.5 46.2632 DHA/EPA/ARA 0.5 973.7 990.7 645.4, 671.5 47.47 32 DHA/DPA/EPA 1.1999.8 1016.8 671.5, 697.5 48.86 32 DHA/EPA/ARA 1.9 973.7 990.8 645.5,671.5 DHA/DHA/DPA 1025.7 1042.8 697.5 50.16 32 DHA/DPA/EPA 1.5 999.61016.9 671.5, 697.4 51.37 32 DHA/DPA/DHA 1.1 1025.7 1042.8 695.5, 697.554.57 34 EPA/14:0/DHA 2.0 897.7 914.7 569.5, 595.4 55.78 34 DHA/DHA/14:02.9 923.6 940.8 595.5, 695.5 60.74 36 EPA/EPA/16:0 3.1 899.6 916.8597.5, 643.5 61.94 36 DHA/16:0/EPA 13.00 925.7 942.8 597.5, 623.5, 669.563.10 36 DHA/16:0/DHA 20.0 951.8 968.8 623.5, 695.5 65.60 38EPA/EPA/18:0 1.6 927.7 944.8 625.5 66.71 38 DHA/DPA/16:0 2.0 953.7 970.8623.6, 625.4, 697.6 67.46 38 DHA/14:0/14:0 1.3 823.5 840.7 495.4, 595.5EPA/ARA/16:0 901.8 918.8 597.6, 599.5, 645.4 68.60 38 DHA/16:0/ARA 2.0927.8 944.8 599.5, 623.5, 671.5 69.69 38 DHA/16:0/DPA 2.7 953.7 970.8623.5, 625.5 70.39 38 DHA/DHA/18:0 0.7 979.8 996.8 651.5 73.88 40EPA/16:0/14:0 1.1 825.7 842.8 523.5, 569.3, 597.3 74.94 40 DHA/14:0/16:02.9 851.8 868.7 523.5, 623.5 81.17 42 EPA/16:0/16:0 1.9 853.8 870.8551.5, 597.6 82.16 42 DHA/16:0/16:0 9.7 879.7 896.7 551.5, 623.5 85.7244 DPA/16:0/16:0 0.6 881.7 898.8 551.4, 625.5 89.15 44 18:0/16:0/DHA 1.2907.7 924.8 579.4, 651.5PTA-10212 Sample #1

The crude lipid isolated from PTA-10212 Sample #1 was prepared for TAGanalysis prepared for TAG analysis by weighing 5.3 mg of oil into anHPLC vial and diluting with 1 mL of hexane.

TABLE 16 Identification of TAG Species in PTA-10212 Sample #1 RetentionArea Time CN Identification Percent [M + H]⁺ [M + NH4]⁺ (DAG) Fragments43.01 30 EPA/EPA/DHA 1.2 971.7 988.7 643.5, 669.5 44.24 30 DHA/DHA/EPA2.6 997.7 1014.8 669.5, 695.4 45.41 30 DHA/DHA/DHA 2.4 1023.8 1040.8695.5 54.78 34 DHA/EPA/14:0 0.7 897.7 914.8 569.3, 595.4 DHA/DHA/16:1949.7 966.7 621.3, 695.3 59.53 35 DHA/15:0/DHA 0.9 937.8 954.8 609.6,695.5 60.88 36 EPA/16:0/EPA 1.5 899.7 916.7 597.5, 643.2 62.03 36EPA/16:0/DHA 8.3 925.8 942.7 597.6, 623.4 63.17 36 DHA/16:0/DHA 13.1951.7 968.8 623.5, 695.5 66.82 38 DHA/18:0/EPA 1.5 953.7 970.8 625.668.63 38 DHA/ARA/16:0 0.7 927.7 944.7 599.5, 623.3, 671.5 69.79 38DHA/DPA/16:0 0.7 953.8 970.8 623.5, 625.5 70.41 38 DHA/DHA/18:0 0.7979.7 996.7 651.5, 695.3 72.79 40 EPA/16:0/16:1 0.5 851.7 868.6 549.473.82 40 DHA/18:1/14:0 1.8 877.7 894.7 549.5, 621.5, 623.3 75.00 40DHA/16:0/14:0 1.7 851.8 868.8 523.5, 623.5 77.55 41 EPA/15:0/16:0 0.8839.7 856.7 537.5, 583.4 78.59 41 DHA/16:0/15:0 2.5 865.6 882.8 537.3,623.5 81.32 42 EPA/16:0/16:0 5.5 853.7 870.7 551.5, 597.5 82.19 42DHA/16:0/16:0 21.7 879.8 896.7 551.5, 623.5 85.74 43 DHA/17:0/16:0 2.0ND 910.7 565.5, 623.5, 637.7 88.23 44 DPA/16:0/16:0 0.8 881.7 898.8551.7, 625.5 89.19 44 DHA/16:0/18:0 3.2 907.9 924.8 579.5, 623.3, 651.593.18 46 16:0/16:0/16:1 1.2 ND 822.8 549.5, 551.6 94.57 4616:0/16:0/14:0 1.1 779.7 796.7 523.4, 551.3 95.91 46 DHA/12:0/24:0 0.7935.9 952.8 567.5, 607.6 97.88 47 16:0/16:0/15:0 1.4 ND 810.7 537.5,551.4 101.14 48 16:0/16:0/16:0 7.5 807.6 824.7 551.5 104.26 4916:0/16:0/17:0 0.7 ND 838.7 551.4, 565.5 107.35 50 16:0/16:0/18:0 1.7 ND852.8 551.5, 579.5 108.58 50 DHA/16:0/24:0 0.7 991.8 1008.9 623.5,663.7, 735.5 113.28 52 16:0/16:0/20:0 0.6 ND 880.9 551.5, 607.4 124.2456 16:0/16:0/24:0 0.6 ND 936.8 551.5, 663.5 ND = Not DetectedPTA-10212 Sample #2

The crude lipid isolated from PTA-10212 Sample #2 was prepared for TAGanalysis prepared for TAG analysis by weighing 3.6 mg of oil into anHPLC vial and diluting with 1 mL of hexane.

TABLE 17 Identification of TAG Species in PTA-10212 Sample #2 RetentionArea Time CN Identification Percent [M + H]⁺ [M + NH4]⁺ (DAG) Fragments42.99 30 EPA/EPA/DHA 1.4 971.7 988.7 643.4, 669.5 44.22 30 DHA/DHA/EPA3.3 997.8 1014.7 669.5, 695.5 45.4 30 DHA/DHA/DHA 2.4 1023.7 1040.8695.5 54.80 34 DHA/EPA/14:0 0.6 897.7 914.7 569.5 DHA/DHA/16:1 ND 966.7621.3 59.49 35 DHA/15:0/DHA 0.5 ND 954.8 609.6 60.83 36 EPA/16:0/EPA 1.6899.7 916.6 597.5, 643.3 62.02 36 EPA/16:0/DHA 9.9 925.8 942.7 597.5,623.5 63.16 36 DHA/16:0/DHA 13.0 951.8 968.8 623.6, 695.5 66.8 38DHA/18:0/EPA 0.7 953.7 970.6 625.5 68.65 38 DHA/ARA/16:0 0.4 ND 944.8599.6, 623.4 69.76 38 DHA/DPA/16:0 0.4 953.6 970.8 623.5 70.44 38DHA/DHA/18:0 0.3 979.8 996.7 ND 72.74 40 EPA/16:0/16:1 0.4 ND 868.6549.5 73.77 40 DHA/18:1/14:0 1.6 877.6 894.8 549.5, 621.9 74.97 40DHA/16:0/14:0 1.4 851.8 868.7 523.5, 623.7 77.73 41 EPA/15:0/16:0 0.3 ND856.7 537.5 78.53 41 DHA/16:0/15:0 2.2 865.8 882.7 537.5 81.32 42EPA/16:0/16:0 6.3 853.8 870.8 551.4, 597.5 82.15 42 DHA/16:0/16:0 22.8879.7 896.7 551.5, 623.5 85.67 43 DHA/17:0/16:0 1.6 ND 910.8 565.5 89.0844 DPA/16:0/16:0 2.6 ND 898.8 551.5 DHA/16:0/18:0 907.8 924.8 579.593.09 46 16:0/16:0/16:1 0.9 ND 822.8 549.6, 551.3 94.47 4616:0/16:0/14:0 1.1 ND 796.7 523.5, 551.5 95.78 46 DHA/12:0/24:0 0.5 ND952.8 607.5 97.8 47 16:0/16:0/15:0 1.6 ND 810.7 537.3, 551.5 100.99 4816:0/16:0/16:0 9.5 ND 824.7 551.4 104.11 49 16:0/16:0/17:0 0.6 ND 838.7551.7, 565.5 107.23 50 16:0/16:0/18:0 2.1 ND 852.8 551.3, 579.5 108.4550 DHA/16:0/24:0 0.7 ND 1009.0 663.5 113.11 52 16:0/16:0/20:0 0.5 ND880.9 551.3, 607.7 124.07 56 16:0/16:0/24:0 0.8 ND 937.0 551.5, 663.5 ND= Not DetectedPTA-10212 Sample #3

A sample of the TAG fraction of PTA-10212 Sample #3 was prepared inhexane and analyzed by HPLC/APCI/MS to determine the identities ofindividual TAG isomers.

TABLE 18 Identification of TAG Species in PTA-10212 Sample #3 RetentionArea Time Peak # Identification Percent [M + H]⁺ [M + NH4]⁺ (DAG)Fragments 20.016 1 EPA/EPA/EPA 3.7 945.5 962.7 643.5 20.471 2EPA/EPA/DHA 8.6 971.6 988.7 643.5, 669.5 20.970 3 DHA/DHA/EPA 6.5 997.71014.7 695.5, 669.5 21.441 4 DHA/DHA/DHA 3.7 1023.7 1040.7 695.5 21.8555 EPA/EPA/DPA 0.7 973.7 990.7 645.3, 671.3 22.107 6 DHA/EPA/DPA 1.9999.5 1016.7 697.5, 671.4 EPA/EPA/ARA 947.5 964.6 643.3, 645.3 22.573 7EPA/ARA/DHA 2.2 973.7 990.7 671.5, 645.5 23.057 8 DHA/EPA/DPA 1.4 999.61016.7 696.5, 671.4 23.548 9 DHA/DHA/DPA 0.8 1025.7 1042.7 695.5, 697.5DHA/14:0/EPA 897.7 914.7 569.4, 595.3 24.034 10 DHA/16:1/EPA 1.2 923.5940.7 595.5, 621.3 24.306 11 EPA/16:1/EPA 0.7 897.6 914.7 595.3 24.50912 DHA/16:1/DHA 0.8 949.6 966.7 621.3 24.783 13 DHA/14:0/DHA 0.5 923.7940.8 595.5 25.571 14 EPA/15:0/DHA 1.0 911.7 928.7 583.4, 609.4 26.02615 DHA/15:0/DHA 0.7 937.7 954.7 609.3 26.376 16 EPA/16:0/EPA 7.2 899.7916.7 597.5 26.832 17 EPA/16:0/DHA 14.3 925.7 942.7 597.3, 623.4 27.27218 DHA/16:0/DHA 13.2 951.7 968.7 623.5 27.842 19 DPA/14:0/ARA 0.5 901.6918.7 599.4, 623.4 28.048 20 EPA/18:0/EPA 1.0 927.6 944.7 623.4 28.27121 DHA/16:0/ARA 1.0 927.7 944.7 599.5, 623.5 28.564 22 DPA/16:1/DPA 2.3953.7 970.6 623.5 ARA/16:1/ARA 901.8 918.6 597.4 29.060 23 DHA/16:0/ARA2.6 927.7 944.7 599.3, 625.5 29.381 24 DHA/18:0/EPA 0.8 953.8 970.3625.4, 651.5 29.512 25 DHA/16:0//DPA 1.0 953.8 970.8 623.4, 625.4 30.65426 DHA/16:0/16:1 1.4 877.8 894.7 549.5, 623.5 31.015 27 DHA/16:0/14:00.6 851.7 868.7 523.3, 623.7 32.216 28 DHA/16:0/15:0 0.8 865.8 882.7537.5, 623.3 33.063 29 EPA/16:0/16:0 4.1 853.5 870.7 551.5, 597.5 33.43830 DHA/16:0/16:0 9.7 879.7 896.7 551.5, 623.5 35.518 31 DPA/16:0/16:00.9 881.7 898.7 551.5, ND 35.798 32 DHA/18:0/16:0 1.3 907.8 924.7 579.4,651.3 39.578 33 16:0/16:016:0 1.3 ND 824.8 551.5 ND = Not DetectedPTA-10212 Sample #4

A sample of the TAG fraction of PTA-10212 Sample #4 was prepared inhexane and analyzed by HPLC/APCI/MS to determine the identities ofindividual TAG isomers.

TABLE 19 Identification of TAG Species in PTA-10212 Sample #4 RetentionArea Time Peak # Identification Percent [M + H]⁺ [M + NH4]⁺ (DAG)Fragments 20.1 1 EPA/EPA/EPA 2.3 945.5 962.7 643.5 20.6 2 EPA/EPA/DHA4.4 971.6 988.7 643.5, 669.5 21.1 3 DHA/DHA/EPA 4.7 997.7 1014.7 695.5,669.5 21.6 4 DHA/DHA/DHA 4.1 1023.7 1040.7 695.5 EPA/EPA/DPA 973.7 990.7645.3, 671.3 22.0 5 EPA/EPA/DPA 0.2 973.7 990.7 645.3, 671.3 22.3 6DHA/EPA/DPA 1.4 999.5 1016.7 697.5, 671.4 EPA/EPA/ARA 947.5 964.6 645.322.7 7 EPA/ARA/DHA 1.1 973.7 990.7 671.5, 645.5 23.2 8 DHA/EPA/DPA 0.5999.6 1016.7 696.5, 671.4 23.7 9 DHA/DPA/DHA 0.2 1025.8 1043.8 697.724.6 10 DHA/16:1/DHA 0.3 949.6 966.7 621.3 24.9 11 DHA/14:0/EPA 0.4923.5 940.7 595.4 25.3 12 EPA/15:0/EPA 0.4 885.5 902.5 583.5 25.7 13EPA/15:0/DHA 1.0 911.7 928.7 583.4, 609.4 26.2 14 DHA/15:0/DHA 0.6 937.7954.7 609.3 26.6 15 EPA/16:0/EPA 4.9 899.7 916.7 597.5 27.0 16EPA/16:0/DHA 12.8 925.7 942.7 597.3, 623.4 27.5 17 DHA/16:0/DHA 15.2951.7 968.7 623.5 28.3 18 EPA/18:0/EPA 2.0 927.6 944.7 623.4 28.7 19DPA/16:1/DPA 2.3 953.7 970.6 623.5 ARA/16:1/ARA 901.8 918.6 597.4 29.320 DHA/16:0/ARA 1.4 927.7 944.7 599.3, 623.4 29.6 21 DHA/16:0/DPA 1.5953.8 970.3 625.4, 651.5 30.0 22 DHA/18:0/DHA 0.7 979.7 996.7 651.5 30.923 DHA/16:0/16:1 0.7 877.8 894.7 549.5, ND EPA/16:0/16:1 825.6 842.6549.5, ND 31.3 24 DHA/14:0/16:0 0.6 851.7 868.7 523.3, 595.3 32.5 25DHA/16:0/15:0 1.5 865.8 882.7 537.5, 623.4 33.4 26 EPA/16:0/16:0 4.4853.5 870.7 551.5, 597.5 33.8 27 DHA/16:0/16:0 14.5 879.7 896.7 551.5,623.5 35.0 28 DPA/16:0/16:0 2.3 881.6 898.7 551.5, 625.5 DHA/15:0/18:0893.8 910.7 565.5, ND 35.8 29 DPA/16:0/16:0 1.3 881.7 898.7 551.5, ND36.2 30 DPA/16:0/16:0 2.6 881.7 898.7 551.5, 625.5 DHA/16:0/18:0 907.8924.7 579.4, 623.5 40.0 31 16:0/16:016:0 3.4 ND 824.8 551.5 42.2 3216:0/16:0/18:0 0.7 ND 852.8 551.3, 579.5 43.0 33 DHA/16:0/24:0 0.9 991.71008.8 623.3, 663.5 ND = Not DetectedPTA-10212 Sample #5

A sample of the TAG fraction of PTA-10212 Sample #5 was prepared inhexane and analyzed by HPLC/APCI/MS to determine the identities ofindividual TAG isomers.

TABLE 20 Identification of TAG Species in PTA-10212 Sample #5 RetentionPeak Area Time # Identification Percent [M + H]⁺ [M + NH4]⁺ (DAG)Fragments 21.0 1 EPA/EPA/EPA 1.7 945.7 962.8 643.5 21.5 2 EPA/EPA/DHA5.5 971.6 988.7 643.5, 669.5 22.0 3 DHA/DHA/EPA 7.6 997.7 1014.7 695.5,669.5 22.5 4 DHA/DHA/DHA 4.5 1023.8 1040.7 695.5 23.0 5 EPA/EPA/DPA 0.5973.8 990.8 645.5, 671.5 23.3 6 DHA/EPA/DPA 1.5 999.7 1016.7 697.5,671.5 EPA/EPA/ARA 947.6 964.8 645.5 23.7 7 EPA/ARA/DHA 1.9 973.6 990.7671.5, 645.4 DHA/DPA/DHA 1025.7 1042.7 695.5, 697.5 24.2 8 DHA/EPA/DPA1.1 999.7 1016.7 669.5, 671.4, 696.5 24.8 9 DHA/DHA/DPA 0.6 1025.71042.9 695.5, 697.5 DHA/14:0/EPA 897.7 914.7 595.5 25.3 10 DHA/16:1/EPA0.7 923.8 940.8 595.5, 621.3 25.6 11 DHA/14:0/EPA 0.6 897.7 914.7 569.3,595.4 25.8 12 DHA/16:1/DHA 0.5 949.7 966.7 621.3, 695.5 26.0 13DHA/16:1/EPA 0.4 923.7 940.8 595.5, 621.3 26.9 14 EPA/15:0/DHA 0.7 911.7928.7 583.5, 609.3 27.4 15 DHA/15:0/DHA 0.7 937.6 954.8 609.3 27.8 16EPA/16:0/EPA 4.9 899.7 916.7 597.5 28.2 17 EPA/16:0/DHA 14.3 925.7 942.8597.5, 623.5 28.7 18 DHA/16:0/DHA 12.2 951.7 968.8 623.5 29.3 19DPA/14:0/ARA 0.6 901.7 918.8 597.3 29.5 20 EPA/18:0/EPA 1.5 927.7 944.8625.5 30.0 21 DHA/16:0/ARA 3.4 953.7 970.8 623.4 30.6 22 EPA/EPA/18:02.1 927.7 944.7 599.5, 625.5, 669.3 31.0 23 DHA/18:0/EPA 1.7 953.8 970.8625.4, 651.5 31.3 24 DHA/18:0/DHA 0.9 979.7 996.8 651.5, 695.3 31.9 2616:0/DHA/14:0 0.8 851.7 868.7 595.5, 623.5 32.3 27 18:1/14:0/DHA 1.7877.7 894.7 549.5, 595.5 32.6 28 DHA/16:0/14:0 0.9 851.8 868.7 523.4,623.5 33.5 29 EPA/15:0/16:0 0.7 839.7 856.7 537.5, 583.3 DHA/20:0/EPA981.7 998.8 653.5, 679.6 33.9 30 DHA/16:0/15:0 1.2 865.7 882.7 537.5,623.5 34.8 31 EPA/16:0/16:0 3.9 853.8 870.7 551.5, 597.5 35.2 32DHA/16:0/16:0 10.6 879.7 896.7 551.5, 623.5 36.4 33 DPA/16:0/16:0 1.5881.7 898.7 551.5, 625.5 37.4 33 DPA/16:0/16:0 1.2 881.7 898.7 551.5,625.5 37.7 34 DHA/16:0/18:0 1.9 907.7 924.7 579.4 38.4 35 EPA/24:0/DHA0.5 1037.8 1054.8 709.5, 735.6 38.8 36 DHA/24:0/DHA 1.0 1064.8 1081.8735.7

EXAMPLE 5

Crude oils were further processed via refining, bleaching, anddeodorizing to obtain refined oils. The refined oils were diluted withhigh oleic sunflower oil to obtain final oils with a DHA content ofapproximately 400 mg/g. Individual lipid classes were isolated and thefatty acid profiles of each class was determined using GC-FID as FAME.

PTA-10208 Final Oils

The fatty acid profiles for PTA-10208 Final Oils #1-5 are summarized inTables 21-22, including profiles associated within the isolated TAGfraction (Tables 23-24) and the isolated sterols/DAG fraction (Tables24-26).

Individual lipid classes in the final oils were also determined usingflash chromatography (Table 27) and normal HPLC with ELSD and APCI-MSconfirmation (Table 28).

TABLE 21 Fatty Acid Profiles of PTA-10208 Final Oils (mg/g) PTA- PTA-PTA- PTA- PTA- 10208 10208 10208 10208 10208 Final Final Final FinalFinal Oil #1 Oil #2 Oil #3 Oil #4 Oil #5 FAME FAME FAME FAME FAME FattyAcid (mg/g) (mg/g) (mg/g) (mg/g) (mg/g) C12:0 2.5 2.4 2.8 2.7 2.7 C14:016.1 14.9 21.0 18.4 17.5 C14:1 0.0 0.0 0.0 0.0 0.0 C15:0 3.8 3.6 4.4 3.93.9 C16:0 192.1 179.1 193.1 184.3 194.6 C16:1 0.4 0.5 0.5 0.5 0.5 C17:00.6 0.5 0.9 0.8 2.1 C18:0 12.8 13.9 11.5 12.3 12.9 C18:1 n-9 23.5 82.025.7 26.0 29.5 C18:1 n-7 0.2 0.7 0.1 0.1 0.1 C18:2 n-6 3.7 8.1 4.0 4.14.3 C20:0 4.3 4.1 3.7 4.0 4.0 C18:3 n-3 0.0 0.0 0.0 0.0 0.0 C20:1 n-9<0.1 0.1 <0.1 <0.1 <0.1 C18:4 n-3 2.4 2.5 2.8 2.7 2.8 C20:2 n-6 0.0 0.00.0 0.0 0.0 C20:3 n-6 0.2 0.1 0.1 0.1 0.1 C22:0 1.2 1.8 1.0 1.1 1.1C20:4 n-7 1.7 1.6 1.7 1.8 1.6 C20:3 n-3 0.0 0.0 0.0 0.0 0.0 C20:4 n-612.9 12.1 13.5 13.5 13.3 C22:1 n-9 0.0 0.0 0.0 0.0 0.0 C20:4 n-5 1.6 1.41.5 1.7 1.5 C20:4 n-3 6.0 5.7 6.0 6.0 6.1 C20:5 n-3 173.8 163.3 196.4209.6 197.9 C24:0 1.4 1.6 1.3 1.3 1.0 C22:4\n-9 0.0 0.0 0.0 0.0 0.0C24:1 n-9 3.4 3.2 2.3 2.6 2.3 C22:5 n-6 14.9 14.0 14.4 13.0 12.9 C22:5n-3 43.9 41.3 32.8 40.3 36.9 C22:6 n-3 394.8 373.7 373.2 374.3 364.2 Sumof FAME 918.1 932.2 914.7 925.1 914.1

TABLE 22 Fatty Acid Profiles of PTA-10208 Final Oils (%) PTA- PTA- PTA-PTA- PTA- 10208 10208 10208 10208 10208 Final Final Final Final FinalOil #1 Oil #2 Oil #3 Oil #4 Oil #5 Fatty Acid % FAME % FAME % FAME %FAME % FAME C12:0 0.3 0.3 0.3 0.3 0.3 C14:0 1.8 1.6 2.3 2.0 1.9 C14:10.0 0.0 0.0 0.0 0.0 C15:0 0.4 0.4 0.5 0.4 0.4 C16:0 20.9 19.2 21.1 19.921.3 C16:1 <0.1 <0.1 <0.1 <0.1 0.1 C17:0 0.1 0.1 0.1 0.1 0.2 C18:0 1.41.5 1.3 1.3 1.4 C18:1 n-9 2.6 8.8 2.8 2.8 3.2 C18:1 n-7 <0.1 0.1 <0.1<0.1 <0.1 C18:2 n-6 0.4 0.9 0.4 0.4 0.5 C20:0 0.5 0.4 0.4 0.4 0.4 C18:3n-3 0.0 0.0 0.0 0.0 0.0 C20:1 n-9 <0.1 <0.1 <0.1 <0.1 <0.1 C18:4 n-3 0.30.3 0.3 0.3 0.3 C20:2 n-6 0.0 0.0 0.0 0.0 0.0 C20:3 n-6 <0.1 <0.1 <0.1<0.1 <0.1 C22:0 0.1 0.2 0.1 0.1 0.1 C20:4 n-7 0.2 0.2 0.2 0.2 0.2 C20:3n-3 0.0 0.0 0.0 0.0 0.0 C20:4 n-6 1.4 1.3 1.5 1.5 1.5 C22:1 n-9 0.0 0.00.0 0.0 0.0 C20:4\n-5 0.2 0.2 0.2 0.2 0.2 C20:4\n-3 0.7 0.6 0.7 0.7 0.7C20:5 n-3 18.9 17.5 21.5 22.7 21.6 C24:0 0.1 0.2 0.1 0.1 0.1 C22:4 n-90.0 0.0 0.0 0.0 0.0 C24:1 n-9 0.4 0.3 0.2 0.3 0.2 C22:5 n-6 1.6 1.5 1.61.4 1.4 C22:5 n-3 4.8 4.4 3.6 4.4 4.0 C22:6 n-3 43.0 40.1 40.8 40.5 39.9

TABLE 23 Isolated TAG Fatty Acid Profiles: PTA-10208 Final Oils (mg/g)PTA- PTA- PTA- PTA- PTA- 10208 10208 10208 10208 10208 Final Final FinalFinal Final Oil #1 Oil #2 Oil #3 Oil #4 Oil #5 FAME FAME FAME FAME FAMEFatty Acid (mg/g) (mg/g) (mg/g) (mg/g) (mg/g) C12:0 2.5 2.3 2.7 2.5 2.6C14:0 16.3 15.1 21.3 18.6 18.1 C14:1 0.0 0.0 0.0 0.0 0.0 C15:0 3.9 3.64.4 4.0 4.0 C16:0 194.2 181.9 196.1 186.1 199.8 C16:1 0.4 0.4 0.6 0.50.7 C17:0 0.6 0.5 0.9 0.8 0.8 C18:0 12.9 14.2 11.7 12.5 13.2 C18:1 n-924.3 84.0 26.8 26.1 34.0 C18:1 n-7 0.1 0.7 0.1 0.1 0.3 C18:2 n-6 3.2 7.73.4 3.5 4.0 C20:0 4.4 4.2 3.8 4.0 4.2 C18:3 n-3 0.0 0.0 0.0 0.0 0.0C20:1 n-9 <0.1 0.2 <0.1 <0.1 0.1 C18:4 n-3 2.5 2.4 2.8 2.6 2.7 C20:2 n-60.0 0.0 0.0 0.0 0.0 C20:3 n-6 0.2 0.2 0.1 0.1 0.1 C22:0 1.2 1.9 1.0 1.11.1 C20:4 n-7 1.7 1.6 1.8 1.8 1.7 C20:3 n-3 0.0 0.0 0.0 0.0 0.0 C20:4n-6 13.2 12.3 13.8 13.7 13.8 C22:1 n-9 0.0 0.0 0.0 0.0 0.0 C20:4 n-5 1.61.5 1.6 1.7 1.5 C20:4 n-3 6.1 5.7 6.1 5.9 6.2 C20:5 n-3 176.0 166.1199.0 211.2 204.2 C24:0 1.2 1.3 1.0 1.1 1.2 C22:4 n-9 0.0 0.0 0.0 0.00.0 C24:1 n-9 3.3 3.2 2.2 2.5 2.4 C22:5 n-6 15.0 14.2 14.7 13.2 13.5C22:5 n-3 44.4 42.0 33.3 40.5 38.3 C22:6 n-3 397.9 378.4 376.4 375.5375.5 Sum of FAME 926.9 945.7 925.5 929.6 944.1

TABLE 24 Isolated TAG Fatty Acid Profiles: PTA-10208 Final Oils (%) PTA-PTA- PTA- PTA- PTA- 10208 10208 10208 10208 10208 Final Final FinalFinal Final Oil #1 Oil #2 Oil #3 Oil #4 Oil #5 Fatty Acid % FAME % FAME% FAME % FAME % FAME C12:0 0.3 0.2 0.3 0.3 0.3 C14:0 1.8 1.6 0.3 0.3 0.3C14:1 0.0 0.0 0.0 0.0 0.0 C15:0 0.4 0.4 0.5 0.4 0.4 C16:0 20.9 19.2 21.220.0 21.2 C16:1 <0.1 <0.1 0.1 0.1 0.1 C17:0 0.1 0.1 0.1 0.1 0.1 C18:01.4 1.5 1.3 1.3 1.4 C18:1 n-9 2.6 8.9 2.9 2.8 3.6 C18:1 n-7 <0.1 0.1<0.1 <0.1 <0.1 C18:2 n-6 0.3 0.8 0.4 0.4 0.4 C20:0 0.5 0.4 0.4 0.4 0.4C18:3 n-3 0.0 0.0 0.0 0.0 0.0 C20:1 n-9 <0.1 <0.1 <0.1 <0.1 <0.1 C18:4n-3 0.3 0.3 0.3 0.3 0.3 C20:2 n-6 0.0 0.0 0.0 0.0 0.0 C20:3 n-6 <0.1<0.1 <0.1 <0.1 <0.1 C22:0 0.1 0.2 0.1 0.1 0.1 C20:4 n-7 0.2 0.2 0.2 0.20.2 C20:3 n-3 0.0 0.0 0.0 0.0 0.0 C20:4 n-6 1.4 1.3 1.5 1.5 1.5 C22:1n-9 0.0 0.0 0.0 0.0 0.0 C20:4 n-5 0.2 0.2 0.2 0.2 0.2 C20:4 n-3 0.7 0.60.7 0.6 0.7 C20:5 n-3 19.0 17.6 21.5 22.7 21.6 C24:0 0.1 0.1 0.1 0.1 0.1C22:4 n-9 0.0 0.0 0.0 0.0 0.0 C24:1 n-9 0.4 0.3 0.2 0.3 0.3 C22:5 n-61.6 1.5 1.6 1.4 1.4 C22:5 n-3 4.8 4.4 3.6 4.4 4.1 C22:6 n-3 42.9 40.040.7 40.4 39.8

TABLE 25 Isolated Sterols/DAG Fatty Acid Profiles: PTA-10208 Final Oils(mg/g) PTA- PTA- PTA- PTA- PTA- 10208 10208 10208 10208 10208 FinalFinal Final Final Final Oil #1 Oil #2 Oil #3 Oil #4 Oil #5 FAME FAMEFAME FAME FAME Fatty Acid (mg/g) (mg/g) (mg/g) (mg/g) (mg/g) C12:0 1.92.1 2.9 2.1 1.9 C14:0 9.9 9.5 9.7 10.3 8.0 C14:1 0.0 0.0 0.0 0.0 0.0C15:0 2.4 2.3 2.2 2.3 2.0 C16:0 132.6 128.6 110.1 116.8 106.4 C16:1 0.20.3 <0.1 0.3 0.4 C17:0 0.3 0.2 0.3 0.3 0.3 C18:0 7.3 8.1 6.4 6.8 6.1C18:1 n-9 15.0 55.1 47.4 19.0 30.1 C18:1 n-7 0.4 0.7 0.1 <0.1 0.2 C18:2n-6 13.1 16.7 21.6 13.5 18.4 C20:0 2.0 2.1 1.2 1.8 1.4 C18:3 n-3 0.0 0.00.0 0.0 0.0 C20:1 n-9 <0.1 <0.1 <0.1 <0.1 <0.1 C18:4 n-3 2.3 2.4 2.4 2.42.0 C20:2 n-6 0.0 0.0 0.0 0.0 0.0 C20:3 n-6 <0.1 <0.1 <0.1 <0.1 <0.1C22:0 0.6 1.0 0.5 0.6 0.5 C20:4 n-7 0.8 0.9 2.1 0.9 0.7 C20:3 n-3 0.00.0 0.0 0.0 0.0 C20:4 n-6 5.7 5.8 4.8 6.1 4.5 C22:1 n-9 0.0 0.0 0.0 0.00.0 C20:4 n-5 <0.1 <0.1 <0.1 0.6 <0.1 C20:4 n-3 2.7 2.7 2.1 2.7 2.0C20:5 n-3 92.9 94.5 91.9 111.6 84.8 C24:0 1.2 1.3 1.1 1.1 1.3 C22:4 n-90.0 0.0 0.0 0.0 0.0 C24:1 n-9 1.9 2.0 1.2 1.5 1.2 C22:5 n-6 7.8 8.0 6.77.0 5.5 C22:5 n-3 22.2 22.9 13.9 20.7 14.2 C22:6 n-3 246.3 252.7 223.5240.3 196.3 Sum of FAME 569.3 619.8 552.1 568.7 488.2

TABLE 26 Isolated Sterols/DAG Fatty Acid Profiles: PTA-10208 Final Oils(%) PTA- PTA- PTA- PTA- PTA- 10208 10208 10208 10208 10208 Final FinalFinal Final Final Oil #1 Oil #2 Oil #3 Oil #4 Oil #5 Fatty Acid % FAME %FAME % FAME % FAME % FAME C12:0 0.3 0.3 0.5 0.4 0.4 C14:0 1.7 1.5 1.81.8 1.6 C14:1 0.0 0.0 0.0 0.0 0.0 C15:0 0.4 0.4 0.4 0.4 0.4 C16:0 23.320.8 19.9 20.5 21.8 C16:1 <0.1 <0.1 <0.1 <0.1 0.1 C17:0 0.0 0.0 0.1 0.10.1 C18:0 1.3 1.3 1.2 1.2 1.2 C18:1 n-9 2.6 8.9 8.6 3.3 6.2 C18:1 n-70.1 0.1 <0.1 <0.1 <0.1 C18:2 n-6 2.3 2.7 3.9 2.4 3.8 C20:0 0.4 0.3 0.20.3 0.3 C18:3 n-3 0.0 0.0 0.0 0.0 0.0 C20:1 n-9 <0.1 <0.1 <0.1 <0.1 <0.1C18:4 n-3 0.4 0.4 0.4 0.4 0.4 C20:2 n-6 0.0 0.0 0.0 0.0 0.0 C20:3 n-6<0.1 <0.1 <0.1 <0.1 <0.1 C22:0 0.1 0.2 0.1 0.1 0.1 C20:4 n-7 0.1 0.1 0.40.2 0.1 C20:3 n-3 0.0 0.0 0.0 0.0 0.0 C20:4 n-6 1.0 0.9 0.9 1.1 0.9C22:1 n-9 0.0 0.0 0.0 0.0 0.0 C20:4 n-5 <0.1 <0.1 <0.1 0.1 <0.1 C20:4n-3 0.5 0.4 0.4 0.5 0.4 C20:5 n-3 16.3 15.2 16.6 19.6 17.4 C24:0 0.2 0.20.2 0.2 0.3 C22:4 n-9 0.0 0.0 0.0 0.0 0.0 C24:1 n-9 0.3 0.3 0.2 0.3 0.2C22:5 n-6 1.4 1.3 1.2 1.2 1.1 C22:5 n-3 3.9 3.7 2.5 3.6 2.9 C22:6 n-343.3 40.8 40.5 42.3 40.2

TABLE 27 Lipid class separation by flash chromatography (wt %) PTA- PTA-PTA- PTA- PTA- 10208 10208 10208 10208 10208 Lipid Class Final FinalFinal Final Final Separation Oil #1 Oil #2 Oil #3 Oil #4 Oil #5 TAG 93.495.4 94.0 95.7 95.1 Sterols/DAG 3.1 2.9 2.6 3.0 2.9 Recovery (%) 96.598.3 96.6 98.7 98.0

TABLE 28 Lipid class separation by HPLC-ELSD (wt %) Sterol Esters TAGFFA Sterols 1,3-DAG 1,2-DAG MAG Total PTA-10208 0.4 90.8 ND 0.8 0.5 0.5N.D. 93.0 Final Oil #1 PTA-10208 0.4 88.5 ND 0.6 0.6 0.6 N.D. 90.7 FinalOil #2 PTA-10208 0.3 89.4 ND 0.8 0.6 0.5 N.D. 91.6 Final Oil #3PTA-10208 0.3 88.0 ND 0.8 0.5 0.5 N.D. 90.1 Final Oil #4 PTA-10208 0.386.3 ND 0.7 0.8 0.5 N.D. 88.6 Final Oil #5 PTA-10208 0.36 100.76 ND 0.840.54 0.61 N.D. 103.11 Final Oil #6 ND = Not DetectedPTA-10212 Final Oil

DHA was present in a PTA-10212 Final Oil at 41.63% and 366.9 mg/g, whileEPA was present at 16.52%. Individual fatty acid profiles weredetermined and are summarized in Table 29.

TABLE 29 Fatty Acid Profiles of PTA-10212 Final Oil (% FAME) Fatty Acid% FAME C6:0 ND C7:0 ND C8:0 ND C9:0 ND C10:0 ND C11:0 ND C12:0 ND C13:0ND C14:0 0.84 C14:1 ND C15:0 1.33 C16:0 27.09  C16:1 1.03 C17:0 0.34C17:1 ND C18:0 1.26 C18:1 n-9 2.14 C18:1 n-7 0.18 C19:0 ND C18:2 n-60.58 C20:0 0.32 C18:3 n-3 ND C20:1 n-9 ND C18:3 n-6 ND C20:2 n-6 0.26C20:3 n-6 ND C22:0 0.14 C20:3 n-3 ND C20:4 n-6 1.34 C22:1 n-9 ND C23:0ND C20:5 n-3 16.53  C24:0 0.53 C24:1 n-9 ND C22:5 n-6 1.50 C22:5 n-31.30 C22:6 n-3 41.63  Unknown 0.87 ND = Not Detected

EXAMPLE 6

An analysis of the triacylglycerides (TAGs) of the PTA-10208 final oilsdescribed in Example 5 was performed using techniques described inExample 4. The identification of each fatty acid moiety was made, assummarized in Table 30 below.

TABLE 30 Identification of TAG Species in PTA-10208 Final Oil PTA- PTA-PTA- PTA- PTA- 10208 10208 10208 10208 10208 Final Final Final FinalFinal Oil #1 Oil #2 Oil #3 Oil #4 Oil #5 Identification Area % Area %Area % Area % Area % EPA/EPA/EPA 1.3 1.0 1.9 1.7 1.4 EPA/EPA/DHA 8.2 6.07.3 6.8 6.4 DHA/DHA/EPA 14.2 11.1 10.6 9.5 8.7 DHA/DHA/DHA 10.2 8.3 7.66.1 5.7 DPA/EPA/EPA 1.2 0.9 1.0 1.1 1.1 DHA/DPA/EPA 3.0 2.4 2.5 2.3 2.9DHA/EPA/ARA 3.8 3.0 3.0 3.0 2.3 DHA/DPA/DHA DHA/DPA/EPA 2.3 1.9 1.5 1.61.7 DHA/DPA/DHA 1.7 1.2 1.1 1.2 1.2 EPA/14:0/DHA 1.1 1.0 1.8 1.8 1.5DHA/DHA/14:0 1.1 1.0 1.4 1.3 1.3 EPA/EPA/16:0 2.3 2.3 3.4 3.9 3.3DHA/16:0/EPA 12.1 12.5 12.9 14.0 13.4 DHA/16:0/DHA 16.1 16.8 17.5 14.817.2 EPA/EPA/18:0 2.1 2.0 1.7 2.1 2.7 DHA/DPA/16:0 3.0 3.3 2.3 2.9 2.7DHA/16:0/ARA 1.6 1.6 1.8 2.0 2.2 DHA/16:0/DPA 1.3 2.1 1.4 1.5 2.5DHA/18:0/DHA 0.8 0.8 0.7 0.8 1.0 DHA/14:0/16:0 0.6 1.0 1.3 1.4 1.3EPA/16:0/16:0 0.9 1.1 1.5 1.7 2.0 DHA/16:0/16:0 3.6 4.8 5.5 5.7 6.518:0/16:0/DHA 0.4 0.8 0.7 0.8 1.2 18:1/18:1/18:1 0.6 4.0 1.0 1.4 1.6

EXAMPLE 7

A two-day old inoculum flask of the isolated microorganisms depositedunder ATCC Accession Nos. PTA-10208 and 10212 was prepared as a carbonand nitrogen-fed culture in media according to Tables 1 and 2.

Mutagenesis was carried out according to following procedure:

A sterile T=2 day old flask, approximately 50 ml, was poured into asterile 40 ml glass homogenizer. The culture received 50 plunges in thehomogenizer. The culture was pipeted out and filtered through a sterile50 micron mesh filter, which was placed in a 50 ml sterile tube (themesh was used as a means of retaining the larger clumps of colonieswhile letting the smaller clusters and single cells pass through the 50micron mesh.). The entire concentrated macerate was collected in asterile 50 ml tube. The macerated culture was vortexed and dilutions atlevels up to 1:100 fold were made. The diluted macerate samples werevortexed prior to adding 200 μl of inoculum to a media agar plate,100×15 mm, containing 4-5 glass beads (3 mm glass beads). Each plate wasgently agitated in an effort to have the beads spread the inoculumevenly around the plate. Beads were dumped off of plates and plates wereleft to sit with covers on for approximately 5 minutes to dry. Lights inboth the sterile hood and adjoining areas were turned off as theprocedure was performed in dim light. There was minimal light availableto be able to run the procedure but only indirect and dim.

Five replicate plates were placed on the floor of the XL crosslinker(Spectronics Corporation, New York) with the lids off while the sampleswere irradiated. The crosslinker delivered power in terms of microjoulesand a level was sought that achieved a 90%-95% Kill. Five replicatecontrol plates were inoculated with un-mutagenized cells using the sameprotocol. These cell counts were used to calculate the % Kill. Once theirradiation was finished the plates were taken out, the lids werereplaced, and the plates were wrapped in parafilm followed by a wrap inaluminum foil. It was imperative that the plates grew for the first weekin the dark so that they were not able to repair the damaged genes.

Plates were placed in a 22.5° C. room for about 10 days prior tocounting the colonies. When final counts were made, individual colonieswere picked with a sterile inoculating loop and re-streaked on new mediaplates. Each colony was plated on an individual plate. As plates grewdense a sample was taken, using a inoculating loop, and inoculated intoa sterile 250 ml shake flask containing 50 ml of media. This flask wasplaced on a shaker at 200 rpm in a 22.5° C. room. On T=7 days the shakeflask culture was harvested into a 50 ml sterile tube. The pH was takenand the sample was centrifuged to collect the biomass pellet. Eachsample was rinsed and re-suspended in a 50:50 mixture of isopropylalcohol and distilled water prior to being re-centrifuged. The collectedpellet was freeze dried, weighed, and a FAME analysis was performed. Thedata in Tables 31 and 32 represents mutants produced with the aboveprocess from strains PTA-10208 and PTA-10212, respectively.

TABLE 31 PTA-10208 Mutants control Mutant 1 Mutant 2 Mutant 3 PTA- PTA-PTA- PTA- Fatty Acids 10208 10209 10210 10211 % 08:0 0.00 0.00 0.00 0.00% 09:0 0.00 0.00 0.00 0.00 % 10:0 0.00 0.00 0.00 0.00 % 11:0 0.00 0.000.00 0.00 % 11:1 0.00 0.00 0.00 0.00 % 12:0 0.11 0.10 0.22 0.19 % 12:10.00 0.00 0.00 0.00 % 13:0 0.19 0.19 0.15 0.16 % 13:1 0.00 0.00 0.000.00 % 14:0 1.94 1.82 2.98 2.59 % 14:1 0.00 0.00 0.00 0.00 % 15:1 2.662.22 1.76 1.66 % 16:0 24.87 24.97 23.71 25.01 % 16:1 0.20 0.25 0.07 0.07% 16:2 0.00 0.00 0.00 0.00 % 16:3 0.00 0.00 0.00 0.00 % 17:0 1.49 1.210.62 0.66 % 18:0 1.13 1.14 0.91 1.01 % 18:1 n-9 0.07 0.07 0.06 0.06 %18:1 n-7 0.00 0.00 0.00 0.00 % 18:2 0.00 0.00 0.00 0.00 % 18:3 n-6 0.000.00 0.05 0.04 % 18:3 n-3 0.09 0.08 0.17 0.14 % 18:4 n-3 0.00 0.00 0.000.00 % 20:0 0.31 0.33 0.24 0.30 % 20:1 n-9 0.00 0.04 0.00 0.00 % 20:20.00 0.00 0.05 0.00 % 20:3 n-9 0.00 0.00 0.00 0.00 % 20:3 n-6 0.12 0.130.08 0.04 % 20:3 n-3 0.42 0.42 0.08 0.06 % 20:4 ARA 0.68 0.67 1.44 1.11% 20:5 n-3 EPA 6.56 6.47 11.99 9.87 % 22:0 0.07 0.07 0.06 0.07 % 22:10.00 0.00 0.00 0.00 % 22:2 0.11 0.09 0.10 0.08 % 22:3 0.00 0.00 0.000.00 % 22:4 n-6 0.00 0.00 0.00 0.00 % 22:5 n-6 2.32 2.36 2.36 2.36 %22:5 n-3 0.48 0.66 0.66 0.52 % 22:6 n-3 DHA 51.58 52.27 48.17 49.35 %24:0 0.00 0.00 0.00 0.00 % 24:1 0.00 0.00 0.00 0.00 % Fat 47.87 49.4166.00 63.12 % Unknown 4.61 4.45 4.07 4.64

TABLE 32 PTA-10212 Mutants Control Mutant 1 Mutant 2 Mutant 3 PTA- PTA-PTA- PTA- Fatty Acids 10212 10213 10214 10215 % 08:0 0.00 0.00 0.00 0.00% 09:0 0.00 0.00 0.00 0.00 % 10:0 0.00 0.00 0.00 0.00 % 11:0 0.00 0.000.00 0.00 % 11:1 0.00 0.00 0.00 0.00 % 12:0 0.00 0.00 0.00 0.00 % 12:10.00 0.00 0.00 0.00 % 13:0 0.00 0.00 0.21 0.20 % 13:1 0.00 0.00 0.000.00 % 14:0 0.68 0.77 0.62 0.97 % 14:1 0.00 0.00 0.00 0.00 % 15:1 0.000.00 0.00 0.00 % 16:0 17.36 19.94 15.27 23.61 % 16:1 1.45 2.33 1.40 2.57% 16:2 0.00 0.00 0.00 0.00 % 16:3 0.00 0.00 0.00 0.00 % 17:0 0.20 0.210.18 0.27 % 18:0 0.78 0.82 0.79 0.81 % 18:1 n-9 0.00 0.00 0.00 0.00 %18:1 n-7 0.18 0.27 0.20 0.19 % 18:2 0.00 0.00 0.00 0.00 % 18:3 n-6 0.000.00 0.00 0.00 % 18:3 n-3 0.00 0.00 0.00 0.00 % 18:4 n-3 0.00 0.00 0.000.00 % 20:0 0.00 0.00 0.00 0.00 % 20:1 n-9 0.00 0.00 0.00 0.00 % 20:20.00 0.00 0.00 0.00 % 20:3 n-9 0.00 0.00 0.00 0.00 % 20:3 n-6 0.00 0.000.00 0.00 % 20:3 n-3 0.90 0.77 0.99 0.66 % 20:4 ARA 1.43 1.32 1.65 0.72% 20:5 n-3 EPA 13.33 14.93 14.14 8.54 % 22:0 0.00 0.00 0.00 0.00 % 22:10.00 0.00 0.00 0.00 % 22:2 0.00 0.00 0.00 0.00 % 22:3 0.00 0.00 0.000.00 % 22:4 n-6 0.00 0.00 0.00 0.00 % 22:5 n-6 2.39 1.95 2.59 2.18 %22:5 n-3 0.73 0.79 0.80 0.68 % 22:6 n-3 DHA 59.18 54.31 59.89 56.39 %24:0 0.00 0.00 0.00 0.00 % 24:1 0.00 0.00 0.00 0.00 % Fat 45.69 38.0842.88 48.48 % Unknown 1.38 1.58 1.27 2.19

EXAMPLE 8

An oil was prepared according to the method described in Example 5wherein the oil was diluted with high oleic sunflower oil to achieve acombined DHA+EPA content of at least about 500 mg/g oil. A typicalanalysis and product specification of an oil made according to thisExample is set forth in Table 33.

TABLE 33 Specification Result Chemical Characteristics DHA Content mg/goil Min. 320 382 EPA Content mg/g oil Min. 130 179 DHA + EPA Contentmg/g oil Min. 500 561 Peroxide Value meq/kg Max. 5.0 0.1 AnsidineValue - Max. 20 4.8 Free Fatty Acid % Max. 0.25 0.1 Moisture andVolatiles % Max. 0.02 <0.01 Unsaponifiable Matter % Max. 4.5 1.1Trans-fatty Acids % Max. 1 <1 ELEMENTAL COMPOSITION Arsenic ppm MAX 0.1<0.1 Cadmium ppm MAX 0.1 <0.1 Copper ppm MAX 0.05 <0.02 Iron ppm MAX 0.2<0.02 Lead ppm MAX 0.1 <0.1 Mercury ppm MAX 0.04 <0.01

Other ingredients contained in the oil include less than 2% of SunflowerLecithin; Rosemary Extract; Tocopherols and Ascorbyl Palmitate (asantioxidants).

EXAMPLE 9

An oil was prepared according to the method described in Example 5wherein the oil was diluted with high oleic sunflower oil to achieve acombined DHA+EPA content of at least about 400 mg/g oil. A typicalanalysis and product specification of an oil made according to thisExample is set forth in Table 34.

TABLE 34 Specification Result Chemical Characterstics DHA Content mg/goil Min. 240 255 EPA Content mg/g oil Min. 120 155 DHA + EPA Contentmg/g oil Min. 400 411 Peroxide Value meq/kg Max. 5.0 0.4 AnsidineValue - Max. 20 <1 Free Fatty Acid % Max. 0.25 0.1 Moisture andVolatiles % Max. 0.02 <0.01 Unsaponifiable Matter % Max. 4.5 0.9Trans-fatty Acids % Max. 1 <1 ELEMENTAL COMPOSITION Arsenic ppm MAX 0.1<0.1 Cadmium ppm MAX 0.1 <0.1 Copper ppm MAX 0.05 <0.02 Iron ppm MAX 0.20.0 Lead ppm MAX 0.1 <0.1 Mercury ppm MAX 0.04 <0.01

Other ingredients contained in the oil include less than 2% of SunflowerLecithin; Rosemary Extract; Tocopherols and Ascorbyl Palmitate (asantioxidants).

In some embodiments, Examples 8 or 9 above are provided in a size 20vegetarian gel capsule in a fill weight of about 999 mg to about 1105 mgoil with the gross weight of the capsule being about 1463 mg to about1789 mg wherein the capsule has a rupture time of not more than 15minutes and has a shelf life of about 24 months.

All of the various aspects, embodiments, and options described hereincan be combined in any and all variations.

What is claimed:
 1. A microbial oil comprising omega-3 polyunsaturatedfatty acids comprising docosahexaenoic acid and eicosapentaenoic acid inan amount of ≧90%, by weight, of the total amount of omega-3polyunsaturated fatty acids, wherein the amount of eicosapentaenoicacid, by weight, is from 19% to 55% of the total amount ofdocosahexaenoic acid and eicosapentaenoic acid, and the amount ofdocosahexaenoic acid, by weight, is from 35% to 71% of the total amountof docosahexaenoic acid and eicosapentaenoic acid, and wherein the oilcomprises from 120 mg to 220 mg eicosapentaenoic acid per one gram ofoil and from 240 mg to 450 mg docosahexaenoic acid per one gram of oil.2. A microbial oil comprising omega-3 polyunsaturated fatty acidscomprising docosahexaenoic acid and eicosapentaenoic acid in an amountof ≧90%, by weight, of the total amount of omega-3 polyunsaturated fattyacids, wherein the amount of eicosapentaenoic acid, by weight, is from19% to 55% of the total amount of docosahexaenoic acid andeicosapentaenoic acid, and the amount of docosahexaenoic acid, byweight, is from 35% to 71% of the total amount of docosahexaenoic acidand eicosapentaenoic acid, and wherein the oil comprises from 130 mg to195 mg eicosapentaenoic acid per one gram of oil and from 320 mg to 480mg docosahexaenoic acid per one gram of oil.
 3. A microbial oilcomprising omega-3 polyunsaturated fatty acids comprisingdocosahexaenoic acid and eicosapentaenoic acid in an amount of ≧90%, byweight, of the total amount of omega-3 polyunsaturated fatty acids,wherein the amount of eicosapentaenoic acid, by weight, is from 19% to55% of the total amount of docosahexaenoic acid and eicosapentaenoicacid, and the amount of docosahexaenoic acid, by weight, is from 35% to71% of the total amount of docosahexaenoic acid and eicosapentaenoicacid, and where the omega-3 polyunsaturated fatty acids further comprisedocosapentaenoic acid in an amount of from 0% to 10%, by weight, of thetotal amount of omega-3 polyunsaturated fatty acids.
 4. The oil of claim3, wherein said oil comprises about 150 mg to about 300 mgeicosapentaenoic acid per one gram of oil; from about 200 mg to about400 mg docosahexaenoic acid per one gram of oil; and from about 0 toabout 55 mg docosapentaenoic acid per one gram of oil.
 5. The oil of anyone of claims 1-4, wherein said oil is produced by Schizochytrium sp. 6.The oil of any one of claims 1-4, wherein said oil comprises less thatabout 5% by weight of each of arachidonic acid, docosapentaenoic acidn-6, oleic acid, linoleic acid, linolenic acid, eicosenoic acid, erucicacid and stearidonic acid.
 7. A microbial oil comprising atriacylglycerol fraction of at least 10% by weight, wherein at leastabout 12% by weight of the fatty acids in the triacylglycerol fractionis eicosapentaenoic acid, wherein at least 25% by weight of the fattyacids in the triacylglycerol fraction is docosahexaenoic acid, whereinless that 5% by weight of the fatty acids in the triacylglycerolfraction is arachidonic acid, and wherein the oil comprises from 120 mgto 220 mg eicosapentaenoic acid per one gram of oil and from 240 mg to450 mg docosahexaenoic acid per one gram of oil.
 8. The oil of any oneof claims 1-4, and 7, wherein said oil comprises a ratio of EPA:DHAselected from 1:1 to 1:1.5, 1:1 to 1:2, 1:1.5 to 1:2, 1:1 to 1:2.5, 1:2to 1:2.5, and 1:4 to 1:7 by weight of total omega-3 polyunsaturatedfatty acids.
 9. A microbial oil comprising 120 mg to 220 mgeicosapentaenoic acid per one gram of oil and from 240 mg to 450 mgdocosahexaenoic acid per one gram of oil.
 10. The oil of claim 9,wherein said oil is produced by Schizochytrium sp.